*thal*

a. [ Gr. 'a priv. + &unr_; nuptial bed. ] (Bot.) Not furnished with shields or beds for the spores, as the thallus of certain lichens. [ 1913 Webster ]

a. Of or pertaining to the azimuth; in a horizontal circle. [ 1913 Webster ]

Azimuthal error of a transit instrument, its deviation in azimuth from the plane of the meridian. [ 1913 Webster ]

a. [ Gr. &unr_; the depth of the sea. ] Relating to the deepest zone or region of the ocean. [ 1913 Webster ]

n. The act of bequeathing; bequeathment; bequest. Fuller. [ 1913 Webster ]

n. The act of betrothing, or the fact of being betrothed; a mutual promise, engagement, or contract for a future marriage between the persons betrothed; betrothment; affiance. “The feast of betrothal.” Longfellow. [ 1913 Webster ]

a. Containing bismuth. [ 1913 Webster ]

v. t. & i. [ Boot, for booty + hale. ] To forage for booty; to plunder. [ Obs. ] Beau. & Fl. [ 1913 Webster ]

v. to test the alcohol content of someone's blood by means of a breathalyzer.
Syn. -- breathalyse. [ WordNet 1.5 ]

n. [ a Trademark. ]a device that measures alcohol content of a person's breath.
Syn. -- breathalyser, breath analyzer. [ WordNet 1.5 ]

a. [ Gr. ke`ntron center + le`kiqos yolk of an egg. ] (Biol.) Having the food yolk placed at the center of the ovum, segmentation being either regular or unequal. Balfour. [ 1913 Webster ]

adj. of or relating to the cortex and the hypothalamus. [ WordNet 1.5 ]

a. [ Ecto- + Gr. &unr_; the yolk of an egg. ] (Biol.) Having the food yolk, at the commencement of segmentation, in a peripheral position, and the cleavage process confined to the center of the egg; as, ectolecithal ova. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. "edrai^os steadfast + 'ofqalmo`s the eye.] (Zoöl.) A group of Crustacea in which the eyes are without stalks; the Arthrostraca. [Written also Edriophthalmata.] [1913 Webster]

a. (Zoöl.) Pertaining to the Edriophthalma. [ 1913 Webster ]

n. a type of large-holed Swiss cheese.
Syn. -- Emmenthal, Emmental, Emmenthaler. [ WordNet 1.5 ]

a. (Zoöl.) Pertaining to the endognath. [ 1913 Webster ]

n. (Thermodynamics)A thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure; “enthalpy is the amount of energy in a system capable of doing mechanical work”). [ WordNet 2.1 ]

a. Belonging to, or designed for, an epithalamium. [ 1913 Webster ]

n.; pl. Epithalamiums L. Epithalamia [ L., fr. Gr. &unr_; , orig. an adj., nuptial; 'epi` upon, at + &unr_; bride chamber. ] A nuptial song, or poem in honor of the bride and bridegroom. [ 1913 Webster ]

The kind of poem which was called epithalamium . . . sung when the bride was led into her chamber. B. Jonson. [ 1913 Webster ]

n.; pl. Epithalamies Epithalamium. [ R. ] Donne. [ 1913 Webster ]

n. [ Ether + alcohol: cf. F. éthal. ] (Chem.) A white waxy solid, C16H33.OH; -- called also cetyl alcohol and cetylic alcohol. See Cetylic alcohol, under Cetylic. [ 1913 Webster ]

‖n. [ Nl., fr. Gr. &unr_; with prominent eyes; &unr_; out + &unr_; the eye. ] (Med.) The protrusion of the eyeball so that the eyelids will not cover it, in consequence of disease. [ 1913 Webster ]

a. Of or pertaining to, or characterized by, exophthalmia. [ 1913 Webster ]

Exophthalmic golter. Same as Rasedow's disease.

‖‖/mhw>, n. [ NL. ] (Med.) Same as Exophthalmia.
Syn. -- exophthalmus, exophthalmy. [ 1913 Webster ]

n. (Med.) Exophthalmia. [ 1913 Webster ]

n. A disease affecting the feet of sheep. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. gymno`s naked + 'ofqalmo`s the eye. ] (Zool.) A group of acalephs, including the naked-eyed medusæ; the hydromedusæ. Most of them are known to be the free-swimming progeny (gonophores) of hydroids. [ 1913 Webster ]

a. [ Gr. &unr_; wet + E. ophthalmic. ] (Anat.) Serving to moisten the eye; -- sometimes applied to the lachrymal ducts. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + &unr_; eye. ] See Apophyllite. [ R. ] [ 1913 Webster ]

a. Pertaining to, or resembling, a labyrinth; intricate; labyrinthian. [ 1913 Webster ]

{ ‖‖ } n. [ NL. lagophtalmia, fr. Gr. lagw`s hare + 'ofqalmo`s eye; -- so called from the notion that a hare sleeps with his eyes open. ] (Med.) A morbid condition in which the eye stands wide open, giving a peculiar staring appearance. [ 1913 Webster ]

n. [ Lauric + ether + alcohol. ] (Chem.) One of the higher alcohols of the paraffine series obtained from spermaceti as a white crystalline solid. It is so called because it occurs in the ethereal salt of lauric acid. [ 1913 Webster ]

a. [ L. lethalis, letalis, fr. lethum, letum, death: cf. F. léthal. ] Deadly; mortal; fatal. “The lethal blow.” W. Richardson. -- Le"thal*ly, adv. [1913 Webster]

n. [ Cf. F. léthalité. ] The quality of being lethal; mortality. [ 1913 Webster ]

{ ‖ } n. [ NL. merithallus, fr. Gr. &unr_;, or &unr_;, a part + &unr_; a young shoot. ] (Bot.) Same as Internode. [ 1913 Webster ]

n. [ Myristic + ether + alcohol. ] (Chem.) A white waxy substance, found in small quantities in spermaceti as an ethereal salt of several fatty acids, and regarded as an alcohol of the methane series. [ 1913 Webster ]

{ } n. [ Micro- + Gr. 'ofqalmo`s eye. ] An unnatural smallness of the eyes, occurring as the result of disease or of imperfect development. [ 1913 Webster ]

a. Monolithic. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. mo`nos single + qa`lamos a chamber. ] (Zool.) A division of Foraminifera including those that have only one chamber. [ 1913 Webster ]

n. [ See Monothalamous. ] (Zool.) A foraminifer having but one chamber. [ 1913 Webster ]

a. [ Mono- + Gr. qa`lamos chamber: cf. F. monothalame. ] (Zool.) One-chambered. [ 1913 Webster ]

a. [ See Monothalamous. ] (Bot.) Formed from one pistil; -- said of fruits. R. Brown. [ 1913 Webster ]

n. (Chem.) A salt of naphthalic acid; a phthalate. [ Obs. ] [ 1913 Webster ]

n. (Chem.) A white crystalline aromatic hydrocarbon, C10H8, analogous to benzene, and obtained by the distillation of certain bituminous materials, such as the heavy oil of coal tar. It is the type and basis of a large number of derivatives among organic compounds. Formerly called also naphthaline. [ 1913 Webster ]

Naphthalene red (Chem.), a dyestuff obtained from certain diazo derivatives of naphthylamine, and called also magdala red. --
Naphthalene yellow (Chem.), a yellow dyestuff obtained from certain nitro derivatives of naphthol. [ 1913 Webster ]

a. (Chem.) Pertaining to , or derived from, naphthalene; -- used specifically to designate a yellow crystalline substance, called naphthalenic acid and also hydroxy quinone, and obtained from certain derivatives of naphthol. [ 1913 Webster ]

a. (Chem.) (a) Pertaining to, derived from, or related to, naphthalene; -- formerly used to denote any one of a series of acids derived from naphthalene, and called naphthalene acids, now specifically referring to 1, 8-naphthalenedicaboxylic acid, C12H8O4. (b) Formerly, designating an acid probably identical with phthalic acid. [ 1913 Webster +PJC ]

n. [ Naphthalene + toluidine. ] (Chem.) Same as Naphthylamine. [ 1913 Webster ]

{ } n. [ F. naphthaline. ] (Chem.) See Naphthalene. [ 1913 Webster ]