n. [ L., fr. Gr. &unr_;. ] (Myth.) A river in the Nether World or infernal regions; also, the infernal regions themselves. By some of the English poets it was supposed to be a flaming lake or gulf. Shak. [ 1913 Webster ]

n. 1. 1 death's-head moth.
Syn. -- genus Acherontia [ WordNet 1.5 ]

a. Of or pertaining to Acheron; infernal; hence, dismal, gloomy; moribund. [ 1913 Webster ]

n. 1. a steroid having androgenic activity; obtained from the cortex of the adrenal gland. [ WordNet 1.5 ]

n. [ F. aéronat. See Aëro-; Natation. ] A dirigible balloon. [ obsolescent ] [ Webster 1913 Suppl. +PJC ]

n. [ F. aéronaute, fr. Gr. &unr_; air + &unr_; sailor. See Nautical. ] An aërial navigator; a balloonist. [ 1913 Webster ]

{ } a. [ Cf. F. aéronauitique. ] Pertaining to aëronautics, or aërial sailing. [ 1913 Webster ]

n. The science or art of ascending and sailing in the air, as by means of a balloon; aërial navigation; ballooning. [ 1913 Webster ]

n. [ F. aéronef. ] A power-driven, heavier-than-air flying machine. Now called airplane. [ obsolescent ] [ Webster 1913 Suppl. +PJC ]

n. [ F., dim. of aile wing. ] 1. A half gable, as at the end of a penthouse or of the aisle of a church. [ Webster 1913 Suppl. ]

2. (Aëronautics) A small plane or surface capable of being manipulated by the pilot of a flying machine to control lateral balance; a hinged wing tip; a lateral stabilizing or balancing plane. [ Webster 1913 Suppl. ]

‖ 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 ]

n. A follower of the Rev. Richard Cameron, a Scotch Covenanter of the time of Charles II. [ 1913 Webster ]

Cameron and others refused to accept the “indulgence” offered the Presbyterian clergy, insisted on the Solemn league and Covenant, and in 1680 declared Charles II. deposed for tyranny, breach of faith, etc. Cameron was killed at the battle of Airdmoss, but his followers became a denomination (afterwards called Reformed Presbyterians) who refused to recognize laws or institutions which they believed contrary to the kingdom of Christ, but who now avail themselves of political rights. [ 1913 Webster ]

n. (Greek antiquity) either of two battles in ancient Greece, one in which Philip of Macedon defeated the Athenians and Thebans (338 BC), or another in which Sulla defeated Mithridates (86 BC). [ WordNet 1.5 ]

n. [ F. chaperon. See Chape, Cape, Cap. ] 1. A hood; especially, an ornamental or an official hood. [ 1913 Webster ]

His head and face covered with a chaperon, out of which there are but two holes to look through. Howell. [ 1913 Webster ]

2. A device placed on the foreheads of horses which draw the hearse in pompous funerals. [ 1913 Webster ]

3. A matron who accompanies a young lady in public, for propriety, or as a guide and protector. [ 1913 Webster ]

v. t. [ imp. & p. p. Chaperoned p. pr. & vb. n. Chaperoning. ] [ Cf. F. chaperonner, fr. chaperon. ] To attend in public places as a guide and protector; to matronize. [ 1913 Webster ]

Fortunately Lady Bell Finley, whom I had promised to chaperon, sent to excuse herself. Hannah More. [ 1913 Webster ]

n. Attendance of a chaperon on a lady in public; protection afforded by a chaperon. [ 1913 Webster ]

‖n.; pl. It. Ciceroni E. Cicerones [ It., fr. L. Cicero, the Roman orator. So called from the ordinary talkativeness of such a guide. ] One who shows strangers the curiosities of a place; a guide. [ 1913 Webster ]

Every glib and loquacious hireling who shows strangers about their picture galleries, palaces, and ruins, is termed by them [ the Italians ] a cicerone, or a Cicero. Trench. [ 1913 Webster ]

a. [ L. Ciceronianus, fr. Cicero, the orator. ] Resembling Cicero in style or action; eloquent. [ 1913 Webster ]

n. Imitation of, or resemblance to, the style or action Cicero; a Ciceronian phrase or expression. “Great study in Ciceronianism, the chief abuse of Oxford.” Sir P. Sidney. [ 1913 Webster ]

n. [ Gr. &unr_; inheritance + &unr_; to possess. ] Inheritance; heritage. [ 1913 Webster ]

n. any of several steroid compounds secreted by the adrenal cortex; they are involved in regulating water and electrolyte balance in the body. [ WordNet 1.5 ]

n. [ It. decamerone, fr. Gr. de`ka ten + &unr_; part; though quite generally supposed to be derived from "hme`ra day: cf. F. décaméron.] A celebrated collection of tales, supposed to be related in ten days; -- written in the 14th century, by Boccaccio, an Italian.

n. The writer of Deuteronomy. [ 1913 Webster ]

n. [ Gr. &unr_;; &unr_; second + &unr_; law: cf. L. Deuteronomium. ] (Bibl.) The fifth book of the Pentateuch, containing the second giving of the law by Moses.

{ } n. (Zool.) The Chinese yellow antelope (Procapra gutturosa), a remarkably swift-footed animal, inhabiting the deserts of Central Asia, Tibet, and China. [ 1913 Webster ]

n. [ NL., fr. Gr. 'ek out + &unr_; skin. ] (Anat.) See Ecteron. -- Ec`der*on"ic a. [1913 Webster]

n. [ See Ect-. ] (Anat.) The external layer of the skin and mucous membranes; epithelium; ecderon. -- Ec`ter*on"ic a. [1913 Webster]

‖n. [ NL., fr. Gr. &unr_; in + &unr_; skin. ] (Anat.) The deep sensitive and vascular layer of the skin and mucous membranes. -- En`de*ron"ic, a. [1913 Webster]

‖n. [ NL., fr. Gr. 'e`nteron an intestine, fr. 'ento`s within. ] (Anat.) The whole alimentary, or enteric, canal. [ 1913 Webster ]

‖n.; pl. Ephemera [ NL. See Ephemera. ] (Zoöl.) One of the ephemeral flies. [ 1913 Webster ]

‖n.; pl. Epimera [ NL., fr. Gr. 'epi` upon + &unr_; a part. ] (Zoöl.) (a) In crustaceans: The part of the side of a somite external to the basal joint of each appendage. See Illust. under Crustacea. (b) In insects: The lateral piece behind the episternum. [ Written also epimerum. ] [ 1913 Webster ]

n. a cosmopolitan genus of usually perennial herbs with asterlike flowers; the leaves were formerly used medicinally, but now are only occasionally so used.
Syn. -- genus Erigeron. [ WordNet 1.5 ]

‖n. pl. [ NL., fr. Gr. &unr_;, &unr_;. ] (Gr. Antiq.) Magistrates in Sparta, who with the ephori and kings, constituted the supreme civil authority. [ 1913 Webster ]

n. [ Gr. &unr_;, &unr_;, an old man + &unr_; to rule. ] Government by old men. [ R. ] Gladstone. [ 1913 Webster ]

n. [ OE. heiroun, heroun, heron, hern, OF. hairon, F. héron, OHG. heigir; cf. Icel. hegri, Dan. heire, Sw. häger, and also G. häher jay, jackdaw, OHG. hehara, higere, woodpecker, magpie, D. reiger heron, G. reiher, AS. hrāgra. Cf. Aigret, Egret. ] (Zool.) Any wading bird of the genus Ardea and allied genera, of the family Ardeidae. The herons have a long, sharp bill, and long legs and toes, with the claw of the middle toe toothed. The common European heron (Ardea cinerea) is remarkable for its directly ascending flight, and was formerly hunted with the larger falcons. [ 1913 Webster ]

☞ There are several common American species; as, the great blue heron (Ardea herodias); the little blue (Ardea cœrulea); the green (Ardea virescens); the snowy (Ardea candidissima); the night heron or qua-bird (Nycticorax nycticorax). The plumed herons are called egrets. [ 1913 Webster ]

Heron's bill (Bot.), a plant of the genus Erodium; -- so called from the fancied resemblance of the fruit to the head and beak of the heron. [ 1913 Webster ]

n. A hawk used in hunting the heron. “Heroner and falcon.” Chaucer. [ 1913 Webster ]

n. A place where herons breed. [ 1913 Webster ]

n. A heronshaw. [ Obs. ] Chaucer. [ 1913 Webster ]

n. [ OF. heroncel, dim. of héron. See Heron. ] (Zool.) A heron. [ Written variously hernshaw, harnsey, etc. ] [ 1913 Webster ]

‖n. [ NL. See Hetero-, and Nereis. ] (Zool.) A free-swimming, dimorphic, sexual form of certain species of Nereis. [ 1913 Webster ]

☞ In this state the head and its appendages are changed in form, the eyes become very large; more or less of the parapodia are highly modified by the development of finlike lobes, and branchial lamellæ, and their setæ become longer and bladelike. [ 1913 Webster ]

a. [ Hetero- + Gr. no`mos law. ] Subject to the law of another. Krauth-Fleming. [ 1913 Webster ]

n. 1. Subordination or subjection to the law of another; political subjection of a community or state; -- opposed to autonomy. [ 1913 Webster ]

2. (Metaph.) A term applied by Kant to those laws which are imposed on us from without, or the violence done to us by our passions, wants, or desires. Krauth-Fleming. [ 1913 Webster ]

n. That which is heteronymous; a thing having a different name or designation from some other thing; -- opposed to homonym. [ 1913 Webster ]

a. [ Hetero- + Gr. "o`nyma, for "o`noma a name. ] Having different names or designations; standing in opposite relations. J. Le Conte.

-- Het"er*on"y*mous*ly, adv. [ 1913 Webster ]

n. [ NL., fr. Gr. "e`x six + &unr_; day; cf. L. hexaëmeron, Gr. &unr_;.] [1913 Webster]

1. A term of six days. Good. [1913 Webster]

2. The history of the six day's work of creation, as contained in the first chapter of Genesis. [1913 Webster]

‖n. [ Gr. "iero`n.] A consecrated place; esp., a temple. [1913 Webster]

n. [ From St. Hieronymus, or Jerome. ] (Eccl.) See Jeronymite. [ 1913 Webster ]

n. Same as hymenopteran.
Syn. -- hymenopterous insect, hymenopteran, hymnenopter. [ WordNet 1.5 ]

n. (Physics) Any baryon that is not a nucleon; it is an unstable particle with a mass greater than that of a neutron. [ WordNet 1.5 ]

‖ [ NL., fr. Gr. "y`steros the latter, following + pro`teros before, others, sooner.] (Rhet.) (a) A figure in which the natural order of sense is reversed; hysterology; as, valet atque vivit, “he is well and lives.” (b) An inversion of logical order, in which the conclusion is put before the premises, or the thing proved before the evidence. [1913 Webster]