Part 697

Lig"ne*ous (lg"n*s), a. [L. ligneus, fr. lignum wood. Cf. Lignous.] Made of wood; consisting of wood; of the nature of, or resembling, wood; woody.

It should be tried with shoots of vines and roots of red roses; for it may be they, being of a moreligneous nature, will incorporate with the tree itself.

Bacon.

Ligneous marble, wood coated or prepared so as to resemble marble.

Lig*nif"er*ous (lg*nf"r*s), a. [L. lignifer; lignum wood + ferre to bear: cf. F. lignifère.] Yielding or producing wood.

Lig`ni*fi*ca"tion (lg`n*f*k"shn), n. [Cf. F. lignification. See Lignify.] (Bot.) A change in the character of a cell wall, by which it becomes harder. It is supposed to be due to an incrustation of lignin.

Lig"ni*form (lg"n*fôrm), a. [L. lignum wood + -form: cf. F. ligniforme.] Like wood.

Lig"ni*fy (-f), v. t. [imp. & p. p. Lignified (-fd); p. pr. & vb. n. Lignifying (- f`ng).] [L. lignum wood + -fy: cf. F. lignifier.] (Bot.) To convert into wood or into a ligneous substance.

Lig"ni*fy, v. i. (Bot.) To become wood.

Lig"nin (lg"nn), n. [L. lignum wood: cf. F. lignine.] (Bot.) A substance characterizing wood cells and differing from cellulose in its conduct with certain chemical reagents.

Recent authors have distinguished four forms of this substance, naming them lignose, lignin, lignone, and lignireose.

Lig`ni*per"dous (lg`n*pr"ds), a. [L. lignum wood + perdere to destroy: cf. F. ligniperde.] (Zoöl.) Wood-destroying; -- said of certain insects.

Lig*nir"e*ose` (lg*nr"*s`), n. (Bot.) See Lignin.

Lig"nite (lg"nt), n. [L. lignum wood: cf. F. lignite.] (Min.) Mineral coal retaining the texture of the wood from which it was formed, and burning with an empyreumatic odor. It is of more recent origin than the anthracite and bituminous coal of the proper coal series. Called also brown coal, wood coal.

Lig*nit"ic (lg*nt"k), a. Containing lignite; resembling, or of the nature of, lignite; as, lignitic clay.

Lignitic group. See Laramie Group.

Lig`ni*tif"er*ous (lg`n*tf"r*s), a. [Lignite + -ferous.] Producing or containing lignite; lignitic.

Lig`no*cer"ic (-n*sr"k), a. [L. lignum wood + cera wax.] (Chem.) Pertaining to, or designating, an acid of the formic acid series, found in the tar, wax, or paraffine obtained by distilling certain kinds of wood, as the beech.

Lig"none` (lg"nn`), n. (Bot.) See Lignin.

{ Lig*nose" (lg*ns"), Lig"nous (lg"ns), } a. [L. lignosus, fr. lignum wood: cf. F. ligneux. Cf. Ligneous.] Ligneous. [R.] Evelyn.

Lig"nose` (lg"ns`), n. 1. (Bot.) See Lignin.

2. (Chem.) An explosive compound of wood fiber and nitroglycerin. See Nitroglycerin.

||Lig"num rho"di*um (lg"nm r"d*m). [NL., fr. L. lignum wood + Gr. ||"ro`don a rose.] (Bot.) The fragrant wood of several shrubs and ||trees, especially of species of Rhodorhiza from the Canary Islands, ||and of the West Indian Amyris balsamifera. || ||Lig"num-vi"tae (-v"t), n. [L., wood of life; lignum wood + vita, ||genitive vitæ, life.] (Bot.) A tree (Guaiacum officinale) found in ||the warm latitudes of America, from which the guaiacum of medicine is ||procured. Its wood is very hard and heavy, and is used for various ||mechanical purposes, as for the wheels of ships' blocks, cogs, ||bearings, and the like. See Guaiacum. || In New Zealand the Metrosideros buxifolia is called lignum-vitæ, and in Australia a species of Acacia. The bastard lignum-vitæ is a West Indian tree (Sarcomphalus laurinus).

Lig"ro*in (lg"r*n), n. A trade name applied somewhat indefinitely to some of the volatile products obtained in refining crude petroleum. It is a complex and variable mixture of several hydrocarbons, generally boils below 170° Fahr., and is more inflammable than safe kerosene. It is used as a solvent, as a carburetant for air gas, and for illumination in special lamps.

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Lig"sam (lg"sam), n. [Cf. D. liggen to lie, E. lie to be prostrate, and E. flotsam, jetsam, or ligan.] Same as Ligan. Brande & C.

||Lig"u*la (lg"*l), n.; pl. L. Ligulæ (- l), E. Ligulas (-lz). [L., a ||little tongue. See Ligule.] 1. (Bot.) See Ligule. || 2. (Zoöl.) (a) The central process, or front edge, of the labium of insects. It sometimes serves as a tongue or proboscis, as in bees. [See Illust. under Labium, and Hymenoptera.] (b) A tongue-shaped lobe of the parapodia of annelids. See Parapodium.

{ Lig"u*late (lg"*lt), Lig"u*la`ted (-l`td), } a. [Cf. F. ligulé. See Ligule, and cf. Lingulate.]