n. 1. a white crystalline compound (HO.C6H4.NH.CO.CH3) used as an analgesic and also as an antipyretic. It has molecular weight 151.16. It is the active ingredient in the commercial analgesics Tylenol and Datril.
Syn. -- p-hydroxyacetanilide, p-acetamidophenol, N-acetyl-p-aminophenol, paracetamol, N-(4-hydroxyphenyl)acetamide It is sold under many trade names, and has been one of the most popular analgesics in the late 20th century. It is used in place of aspirin by people in whom aspirin causes undesirable side effects, such as stomach irritation or stomach bleeding. [ PJC ]

n. (Med.) A white crystalline compound used as an analgesic and also as an antipyretic.
Syn. -- acetphenetidin, phenacetin [ WordNet 1.5 ]

n. [ Acetic + phenyl + one. ] (Chem.) A crystalline ketone, CH3.CO.C6H5, which may be obtained by the dry distillation of a mixture of the calcium salts of acetic and benzoic acids. It is used as a hypnotic under the name of hypnone. [ Webster 1913 Suppl. ]

n. 1. a white crystalline compound used as an analgesic and also as an antipyretic.
Syn. -- acetophenetidin, phenacetin [ WordNet 1.5 ]

a. Pertaining to an achene. [ 1913 Webster ]

{ n. [ Gr. 'a priv. + &unr_; to gape. ] (Bot.) A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; -- called a naked seed by the earlier botanists. [ Written also akene and achænium. ] [ 1913 Webster ]

‖n. See Henna. [ 1913 Webster ]

n. (Anat.) The alisphenoid bone. [ 1913 Webster ]

{ } a. [ L. ala wing + E. sphenoid. ] (Anat.) Pertaining to or forming the wing of the sphenoid; relating to a bone in the base of the skull, which in the adult is often consolidated with the sphenoid; as, alisphenoid bone; alisphenoid canal. [ 1913 Webster ]

a. Also . (Biogeography) Pertaining to or designating the humid division of the Transition zone extending across the northern United States from New England to eastern Dakota, and including also most of Pennsylvania and the mountainous region as far south as northern Georgia. [ Webster 1913 Suppl. ]

a. 1. Of or pertaining to the Allegheny Mountains, or the region where they are situated. Also . [ Webster 1913 Suppl. ]

2. [ From the Allegheny River, Pennsylvania. ] (Geol.) Pertaining to or designating a subdivision of the Pennsylvanian coal measure. [ Webster 1913 Suppl. ]

a. [ Gr. &unr_; together + &unr_; force. ] (Photog.) Uniting the chemical rays of light into one focus, as a certain kind of lens; amacratic. [ 1913 Webster ]

a. [ Gr. &unr_; unequal + &unr_; strength. ] Of unequal strength. [ 1913 Webster ]

v. i. 1. To think, believe, or be of opinion; to understand; to suppose. [ 1913 Webster ]

2. To be apprehensive; to fear. [ 1913 Webster ]

It is worse to apprehend than to suffer. Rowe. [ 1913 Webster ]

v. t. [ imp. & p. p. Apprehended; p. pr. & vb. n. Apprehending. ] [ L. apprehendere; ad + prehendere to lay hold of, seize; prae before + -hendere (used only in comp.); akin to Gr. chanda`nein to hold, contain, and E. get: cf. F. appréhender. See Prehensile, Get. ] 1. To take or seize; to take hold of. [ Archaic ] [ 1913 Webster ]

We have two hands to apprehend it. Jer. Taylor. [ 1913 Webster ]

2. Hence: To take or seize (a person) by legal process; to arrest; as, to apprehend a criminal. [ 1913 Webster ]

3. To take hold of with the understanding, that is, to conceive in the mind; to become cognizant of; to understand; to recognize; to consider. [ 1913 Webster ]

This suspicion of Earl Reimund, though at first but a buzz, soon got a sting in the king's head, and he violently apprehended it. Fuller. [ 1913 Webster ]

The eternal laws, such as the heroic age apprehended them. Gladstone. [ 1913 Webster ]

4. To know or learn with certainty. [ Obs. ] [ 1913 Webster ]

G. You are too much distrustful of my truth.
E. Then you must give me leave to apprehend
The means and manner how. Beau. & Fl. [ 1913 Webster ]

5. To anticipate; esp., to anticipate with anxiety, dread, or fear; to fear. [ 1913 Webster ]

The opposition had more reason than the king to apprehend violence. Macaulay. [ 1913 Webster ]

Syn. -- To catch; seize; arrest; detain; capture; conceive; understand; imagine; believe; fear; dread. -- To Apprehend, Comprehend. These words come into comparison as describing acts of the mind. Apprehend denotes the laying hold of a thing mentally, so as to understand it clearly, at least in part. Comprehend denotes the embracing or understanding it in all its compass and extent. We may apprehended many truths which we do not comprehend. The very idea of God supposes that he may be apprehended, though not comprehended, by rational beings. “We may apprehended much of Shakespeare's aim and intention in the character of Hamlet or King Lear; but few will claim that they have comprehended all that is embraced in these characters.” Trench. [ 1913 Webster ]

n. One who apprehends. [ 1913 Webster ]

n. The quality of being apprehensible. [ R. ] De Quincey. [ 1913 Webster ]

a. [ L. apprehensibilis. See Apprehend. ] Capable of being apprehended or conceived. “Apprehensible by faith.” Bp. Hall. -- Ap`*pre*hen"si*bly, adv. [1913 Webster]

n. [ L. apprehensio: cf. F. appréhension. See Apprehend. ] 1. The act of seizing or taking hold of; seizure; as, the hand is an organ of apprehension. Sir T. Browne. [ 1913 Webster ]

2. The act of seizing or taking by legal process; arrest; as, the felon, after his apprehension, escaped. [ 1913 Webster ]

3. The act of grasping with the intellect; the contemplation of things, without affirming, denying, or passing any judgment; intellection; perception. [ 1913 Webster ]

Simple apprehension denotes no more than the soul's naked intellection of an object. Glanvill. [ 1913 Webster ]

4. Opinion; conception; sentiment; idea. [ 1913 Webster ]

☞ In this sense, the word often denotes a belief, founded on sufficient evidence to give preponderation to the mind, but insufficient to induce certainty; as, in our apprehension, the facts prove the issue. [ 1913 Webster ]

To false, and to be thought false, is all one in respect of men, who act not according to truth, but apprehension. South. [ 1913 Webster ]

5. The faculty by which ideas are conceived; understanding; as, a man of dull apprehension. [ 1913 Webster ]

6. Anticipation, mostly of things unfavorable; distrust or fear at the prospect of future evil. [ 1913 Webster ]

After the death of his nephew Caligula, Claudius was in no small apprehension for his own life. Addison. [ 1913 Webster ]

Syn. -- Apprehension, Alarm. Apprehension springs from a sense of danger when somewhat remote, but approaching; alarm arises from danger when announced as near at hand. Apprehension is calmer and more permanent; alarm is more agitating and transient. [ 1913 Webster ]

a. [ Cf. F. appréhensif. See Apprehend. ] 1. Capable of apprehending, or quick to do so; apt; discerning. [ 1913 Webster ]

It may be pardonable to imagine that a friend, a kind and apprehensive . . . friend, is listening to our talk. Hawthorne. [ 1913 Webster ]

2. Knowing; conscious; cognizant. [ R. ] [ 1913 Webster ]

A man that has spent his younger years in vanity and folly, and is, by the grace of God, apprehensive of it. Jer. Taylor. [ 1913 Webster ]

3. Relating to the faculty of apprehension. [ 1913 Webster ]

Judgment . . . is implied in every apprehensive act. Sir W. Hamilton. [ 1913 Webster ]

4. Anticipative of something unfavorable' fearful of what may be coming; in dread of possible harm; in expectation of evil. [ 1913 Webster ]

Not at all apprehensive of evils as a distance. Tillotson. [ 1913 Webster ]

Reformers . . . apprehensive for their lives. Gladstone. [ 1913 Webster ]

5. Sensible; feeling; perceptive. [ R. ] [ 1913 Webster ]

Thoughts, my tormentors, armed with deadly stings,
Mangle my apprehensive, tenderest parts. Milton. [ 1913 Webster ]

adv. In an apprehensive manner; with apprehension of danger. [ 1913 Webster ]

n. The quality or state of being apprehensive. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. pref. &unr_; + &unr_; the brain. ] (Zool.) The division that includes man alone. R. Owen. [ 1913 Webster ]

n. [ Pref. arch- + enemy. ] A principal enemy. Specifically, Satan, the grand adversary of mankind. Milton. [ 1913 Webster ]

a. (Biol.) Relating to the archenteron; as, archenteric invagination. [ 1913 Webster ]

‖ n. [ Pref. arch- + Gr. &unr_; intestine. ] (Biol.) The primitive enteron or undifferentiated digestive sac of a gastrula or other embryo. See Illust. under Invagination. [ 1913 Webster ]

a. Same as Earthen. [ Obs. ] “An arthen pot.” Holland. [ 1913 Webster ]

n. 1. a lichen in which the fungus component is an ascomycete. [ WordNet 1.5 ]

a. [ See Ash, the tree. ] Of or pertaining to the ash tree. “Ashen poles.” Dryden. [ 1913 Webster ]

a. Consisting of, or resembling, ashes; of a color between brown and gray, or white and gray. [ 1913 Webster ]

The ashen hue of age. Sir W. Scott. [ 1913 Webster ]

n., obs. pl. for Ashes. Chaucer. [ 1913 Webster ]

a. [ Gr. 'asqeniko`s; 'a priv. + sqe`nos strength. ] (Med.) Characterized by, or pertaining to, debility; weak; debilitating. [ 1913 Webster ]

‖n. [ Gr. 'a priv. + sqe`nos strength + 'w`ps eye. ] Weakness of sight. Quain. -- As`the*nop"ic a. [1913 Webster]

n. 1. the lower layer of the earth's crust, below the lithosphere. It is estimated as from fifty to several hundred miles thick. It is less rigid than the lithosphere, but still rigid enough to transmit some transverse seismic waves. [ RHUD ] [ WordNet 1.5 +PJC ]

{ ‖ } n. [ NL. asthenia, Gr. 'asqe`nia; 'a priv. + sqe`nos strength. ] (Med.) Want or loss of strength; debility; diminution of the vital forces. [ 1913 Webster ]

n. 1. an abnormal loss of strength.
Syn. -- asthenia [ WordNet 1.5 ]

/mhw>, n.; pl. E. Atheneums L. Athenæa [ L. Athenaeum, Gr. 'Aqhnai`on a temple of Minerva at Athens, fr. 'Aqhna^, contr. fr. 'Aqhna`a, 'Aqhnai`a, in Homer 'Aqh`nh, 'Aqhnai`n, Athene (called Minerva by the Romans), the tutelary goddess of Athens. ] 1. (Gr. Antiq.) A temple of Athene, at Athens, in which scholars and poets were accustomed to read their works and instruct students. [ 1913 Webster ]

2. A school founded at Rome by Hadrian. [ 1913 Webster ]

3. A literary or scientific association or club. [ 1913 Webster ]

4. A building or an apartment where a library, periodicals, and newspapers are kept for use. [ 1913 Webster ]

a. [ Cf. F. Athénien. ] Of or pertaining to Athens, the metropolis of Greece. -- n. A native or citizen of Athens. [ 1913 Webster ]

prop. n. (Geography) The capital city of Greece. Population (2000) = nk. [ PJC ]

a. [ L. attrahens, p. pr. of attrahere. See Attract, v. t. ] Attracting; drawing; attractive. [ 1913 Webster ]

n. 1. That which attracts, as a magnet. [ 1913 Webster ]

The motion of the steel to its attrahent. Glanvill. [ 1913 Webster ]

2. (Med.) A substance which, by irritating the surface, excites action in the part to which it is applied, as a blister, an epispastic, a sinapism. [ 1913 Webster ]

‖n. [ NL., fr. Gr. &unr_;, fr. &unr_; the neck. ] (Zool.) The part of the neck nearest the back. [ 1913 Webster ]

a. [ OE. autentik, OF. autentique, F. authentique, L. authenticus coming from the real author, of original or firsthand authority, from Gr. &unr_;, fr. &unr_; suicide, a perpetrator or real author of any act, an absolute master; a'yto`s self + a form "enths (not found), akin to L. sons and perh. orig. from the p. pr. of e'i^nai to be, root as, and meaning the one it really is. See Am, Sin, n., and cf. Effendi.] 1. Having a genuine original or authority, in opposition to that which is false, fictitious, counterfeit, or apocryphal; being what it purports to be; genuine; not of doubtful origin; real; as, an authentic paper or register. [1913 Webster]

To be avenged
On him who had stole Jove's authentic fire. Milton. [1913 Webster]

2. Authoritative. [Obs.] Milton. [1913 Webster]

3. Of approved authority; true; trustworthy; credible; as, an authentic writer; an authentic portrait; authentic information. [1913 Webster]

4. (Law) Vested with all due formalities, and legally attested. [1913 Webster]

5. (Mus.) Having as immediate relation to the tonic, in distinction from plagal, which has a correspondent relation to the dominant in the octave below the tonic. [1913 Webster]

Syn. -- Authentic, Genuine. These words, as here compared, have reference to historical documents. We call a document genuine when it can be traced back ultimately to the author or authors from whom it professes to emanate. Hence, the word has the meaning, “not changed from the original, uncorrupted, unadulterated:” as, a genuine text. We call a document authentic when, on the ground of its being thus traced back, it may be relied on as true and authoritative (from the primary sense of “having an author, vouched for”); hence its extended signification, in general literature, of trustworthy, as resting on unquestionable authority or evidence; as, an authentic history; an authentic report of facts. [1913 Webster]

A genuine book is that which was written by the person whose name it bears, as the author of it. An authentic book is that which relates matters of fact as they really happened. A book may be genuine without being, authentic, and a book may be authentic without being genuine. Bp. Watson. [1913 Webster]

It may be said, however, that some writers use authentic (as, an authentic document) in the sense of “produced by its professed author, not counterfeit.” [1913 Webster]

n. An original (book or document). [ Obs. ] “Authentics and transcripts.” Fuller. [ 1913 Webster ]

a. Authentic. [ Archaic ] [ 1913 Webster ]

adv. In an authentic manner; with the requisite or genuine authority. [ 1913 Webster ]

n. The quality of being authentic; authenticity. [ R. ] Barrow. [ 1913 Webster ]

v. t. [ imp. & p. p. Authenticated p. pr. & vb. n. Authenticating (&unr_;). ] [ Cf. LL. authenticare. ] 1. To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit. [ 1913 Webster ]

The king serves only as a notary to authenticate the choice of judges. Burke. [ 1913 Webster ]

2. To prove authentic; to determine as real and true; as, to authenticate a portrait. Walpole. [ 1913 Webster ]

adj. 1. established or certified as genuine.
Syn. -- attested, documented. [ WordNet 1.5 ]

n. a mark on an article of trade to indicate its origin and authenticity.
Syn. -- hallmark, assay-mark. [ WordNet 1.5 ]

2. validating the authenticity of something or someone.
Syn. -- certification. [ WordNet 1.5 ]