n. (Chem.) An organic base, especially one of a class of nitrogen-containing substances occurring ready formed in the tissues of plants and the bodies of animals. [ 1913 Webster ]

☞ Alkaloids all contain nitrogen, carbon, and hydrogen, and many of them also contain oxygen. They include many of the active principles in plants; thus, morphine and narcotine are alkaloids found in opium. [ 1913 Webster ]

{ } a. [ Alkali + -oid: cf. F. alcaloïde. ] 1. Pertaining to, resembling, or containing, alkali. [ 1913 Webster ]

2. of or pertaining to alkaloids. [ WordNet 1.5 ]

n. (Chem.) A bitter purgative principle in aloes. [ 1913 Webster ]

n. [ Gr. &unr_; almond + -oid: cf. F. amygdaloïde. ] (Min.) A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, esp. agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava. [ 1913 Webster ]

{ } a. 1. Almond-shaped. [ 1913 Webster ]

2. Pertaining to, or having the nature of, the rock amygdaloid. [ 1913 Webster ]

{ } a. [ L. amylum starch + -oid. ] Resembling or containing starch; starchlike. AS
Syn. -- starchlike, amylaceous [ 1913 Webster ]

n. 1. A starchlike substance. [ 1913 Webster + AS ]

2. (Med.) Any of a group of diverse starchlike glycoproteins deposited in the organs under some pathological conditions, such as amyloidosis; they are composed of linear nonbranching fibrils when viewed under the electron microscope. Stedman 25 [ 1913 Webster + AS ]

Amyloid degeneration (Med.), Same as amyloidosis; -- called also waxy degeneration or lardaceous degeneration. [ 1913 Webster + AS ]

n. (Med.) A disorder characterized by deposit of extracellular amyloid{ 2 } in organs or tissues in an amount that interferes with normal function of the affected organ; it is often secondary to chronic rheumatoid arthritis or tuberculosis or multiple myeloma. Called also amyloid degeneration waxy degeneration and lardaceous degeneration. [ WordNet 1.5 + AS ]

n. [ F. annelé ringed + -oid. ] (Zool.) An animal resembling an annelid. [ 1913 Webster ]

a. (Zool.) Of or pertaining to the Annuloida. [ 1913 Webster ]

‖n. pl. [ NL., fr. L. annulus ring + -oid. ] (Zool.) A division of the Articulata, including the annelids and allied groups; sometimes made to include also the helminths and echinoderms. [ Written also Annuloidea. ] [ 1913 Webster ]

n. (Med.) A remedy against the plague. Brande & C. [ 1913 Webster ]

a. [ Astragalus + -oid. ] (Anat.) Resembling the astragalus in form. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. bde`lla leech + -oid. ] (Zool.) The order of Annulata which includes the leeches. See Hirudinea. [ 1913 Webster ]

n. [ Beryl + -oid. ] (Crystallog.) A solid consisting of a double twelve-sided pyramid; -- so called because the planes of this form occur on crystals of beryl. [ 1913 Webster ]

adj. 1. of or pertaining to a bungalow; similar to a bungalow. [ WordNet 1.5 ]

2. having many bungalows. the bungaloid suburbs [ WordNet 1.5 ]

n. [ Cellulose + -oid. ] A substance composed essentially of gun cotton and camphor, and when pure resembling ivory in texture and color, but variously colored to imitate coral, tortoise shell, amber, malachite, etc. It is used in the manufacture of jewelry and many small articles, as combs, brushes, collars, and cuffs; -- originally called xylonite. [ 1913 Webster ]

a. [ Cephalo- + -oid. ] Shaped like the head. Craing. [ 1913 Webster ]

‖a. [ F., partitioned, fr. cloison a partition. ] Inlaid between partitions: -- said of enamel when the lines which divide the different patches of fields are composed of a kind of metal wire secured to the ground; as distinguished from champlevé enamel, in which the ground is engraved or scooped out to receive the enamel. S. Wells Williams. [ 1913 Webster ]

v. t. [ imp. & p. p. Cloistered p. pr. & vb. n. Cloistering. ] To confine in, or as in, a cloister; to seclude from the world; to immure. [ 1913 Webster ]

None among them are thought worthy to be styled religious persons but those that cloister themselves up in a monastery. Sharp. [ 1913 Webster ]

n. [ OF. cloistre, F. cloître, L. claustrum, pl. claustra, bar, bolt, bounds, fr. claudere, clausum, to close. See Close, v. t., and cf. Claustral. ] [ 1913 Webster ]

1. An inclosed place. [ Obs. ] Chaucer. [ 1913 Webster ]

2. A covered passage or ambulatory on one side of a court; (pl.) the series of such passages on the different sides of any court, esp. that of a monastery or a college. [ 1913 Webster ]

But let my due feet never fail
To walk the studious cloister's pale. Milton. [ 1913 Webster ]

3. A monastic establishment; a place for retirement from the world for religious duties. [ 1913 Webster ]

Fitter for a cloister than a crown. Daniel. [ 1913 Webster ]

Cloister garth (Arch.), the garden or open part of a court inclosed by the cloisters.

Syn. -- Cloister, Monastery, Nunnery, Convent, Abbey, Priory. Cloister and convent are generic terms, and denote a place of seclusion from the world for persons who devote their lives to religious purposes. They differ is that the distinctive idea of cloister is that of seclusion from the world, that of convent, community of living. Both terms denote houses for recluses of either sex. A cloister or convent for monks is called a monastery; for nuns, a nunnery. An abbey is a convent or monastic institution governed by an abbot or an abbess; a priory is one governed by a prior or a prioress, and is usually affiliated to an abbey. [ 1913 Webster ]

a. Cloistral. [ Obs. ] I. Walton. [ 1913 Webster ]

a. 1. Dwelling in cloisters; solitary. “Cloistered friars and vestal nuns.” Hudibras. [ 1913 Webster ]

In cloistered state let selfish sages dwell,
Proud that their heart is narrow as their cell. Shenstone. [ 1913 Webster ]

2. Furnished with cloisters. Sir H. Wotton. [ 1913 Webster ]

n. [ Cf. OF. cloistier. ] One belonging to, or living in, a cloister; a recluse. [ 1913 Webster ]

a. Of, pertaining to, or confined in, a cloister; recluse. [ Written also cloisteral. ] [ 1913 Webster ]

Best become a cloistral exercise. Daniel. [ 1913 Webster ]

n. A nun. [ R. ] Shak. [ 1913 Webster ]

a. [ Gr. ko`lla glue + -oid. Cf. Collodion. ] Resembling glue or jelly; characterized by a jellylike appearance; gelatinous; as, colloid tumors. [ 1913 Webster ]

n. 1. (Physiol. Chem.) A substance (as albumin, gum, gelatin, etc.) which is of a gelatinous rather than a crystalline nature, and which diffuses itself through animal membranes or vegetable parchment more slowly than crystalloids do; -- opposed to crystalloid. [ 1913 Webster ]

2. (Med.) A gelatinous substance found in colloid degeneration and colloid cancer. [ 1913 Webster ]

Styptic colloid (Med.), a preparation of astringent and antiseptic substances with some colloid material, as collodion, for ready use. [ 1913 Webster ]

a. Pertaining to, or of the nature of, colloids. [ 1913 Webster ]

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

‖n. A Muslim rosary, consisting of ninety-nine beads. Byron. [ 1913 Webster ]

a. [ Condyle + -oid: cf. F. condyloïde. ] (Anat.) Shaped like or pertaining to a condyle. [ 1913 Webster ]

a. [ L. corallum coral + -oid: cf. F. coralloïde. ] Having the form of coral; branching like coral. [ 1913 Webster ]

a. resembling coral; coralloid. Sir T. browne. [ 1913 Webster ]

a. [ Cotyle + -oid ] (Anat.) (a) Shaped like a cup; cup-shaped; as, the cotyloid cavity, the cup-shaped socket which receives the head of the thigh bone. (b) Pertaining to a cotyloid cavity; as, the cotyloid ligament, or notch.
Syn. -- acetabular, cotyloid. [ 1913 Webster + WordNet 1.5 ]

‖n. [ F., a strainer. ] 1. A deep gorge; a gully. [ 1913 Webster ]

2. (Hydraul. Engin.) A dredging machine for excavating canals, etc. [ 1913 Webster ]

a. [ Gr. kry`stallos crystal + -oid. ] Crystal-like; transparent like crystal. [ 1913 Webster ]

n. 1. (Chem.) A body which, in solution, diffuses readily through animal membranes, and generally is capable of being crystallized; -- opposed to colloid. [ 1913 Webster ]

2. (Bot.) One of the microscopic particles resembling crystals, consisting of protein matter, which occur in certain plant cells; -- called also protein crystal. [ 1913 Webster ]

a. [ L.cuculus a cuckoo + -oid. ] (Zool.) Like or belonging to the cuckoos (Cuculidæ). [ 1913 Webster ]

a. [ NL. cyathophyllum, fr. Gr. ky`aqos a cup + fy`llon a leaf. ] (Paleon.) Like, or pertaining to, the family Cyathophyllidæ. [ 1913 Webster ]

n. (Paleon.) A fossil coral of the family Cyathophyllidæ; sometimes extended to fossil corals of other related families belonging to the group Rugosa; -- also called cup corals. Thay are found in paleozoic rocks. [ 1913 Webster ]

n. [ Cyclo- + -oid: cf. F. cycloïde. ] (Geom.) A curve generated by a point in the plane of a circle when the circle is rolled along a straight line, keeping always in the same plane. [ 1913 Webster ]

☞ The common cycloid is the curve described when the generating point (p) is on the circumference of the generating circle; the curtate cycloid, when that point lies without the circumference; the prolate or inflected cycloid, when the generating point (p) lies within that circumference. [ 1913 Webster ]

a. (Zool.) Of or pertaining to the Cycloidei. [ 1913 Webster ]

Cycloid scale (Zool.), a fish scale which is thin and shows concentric lines of growth, without serrations on the margin. [ 1913 Webster ]

n. (Zool.) One of the Cycloidei. [ 1913 Webster ]

a. Pertaining to, or resembling, a cycloid; as, the cycloidal space is the space contained between a cycloid and its base. [ 1913 Webster ]

Cycloidal engine. See Geometric lathe. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. ky`klos circle + -oid. ] (Zool.) An order of fishes, formerly proposed by Agassiz, for those with thin, smooth scales, destitute of marginal spines, as the herring and salmon. The group is now regarded as artificial. [ 1913 Webster ]

a. & n. (Zool.) Same as 2d and 3d Cycloid. [ 1913 Webster ]

n. [ Cf. Exploitation, Deploy. ] Same as Exploitation. [ 1913 Webster ]

a. (Anat.) Of or pertaining to the diploë. [ 1913 Webster ]

n. [ Gr. diplo`os twofold + -oid. ] 1. (Crystallog.) A solid bounded by twenty-four similar quadrilateral faces. It is a hemihedral form of the hexoctahedron. [ 1913 Webster ]

2. (Biol.) a cell or organism having a number of chromosomes corresponding to two copies of each chromosome; a diploid cell or organism. [ PJC ]

A: I'm not interested in diploids.
B: Oh, how I wish your parents had felt the same way!