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Successive division and subdivision, as of a stem of a plant or a vein of the body, into two parts as it proceeds from its origin; successive bifurcation.

A plant with netveined leaves, and monocotyledonous embryos, belonging to the class Dictyogenæ, proposed by Lindley for the orders Dioscoreaceæ, Smilaceæ, Trilliaceæ, etc.

to make a drift; to examine a vein or ledge for the purpose of ascertaining the presence of metals or ores; to follow a vein; to prospect. [U.S.]

A branch vein which drops off from, or leaves, the main lode.

Of or pertaining to certain veins of feldspathic or porphyritic rock crossing metalliferous veins in the mining districts of Cornwall; as, an elvan course.

The rock of an elvan vein, or the elvan vein itself; an elvan course.

Applied to the veins which pass out of the cranium through apertures in its walls.

Pertaining to the kidneys; renal; as, emulgent arteries and veins. -- n.

ual layers, and with no distinct pith. The leaves of the endogens have, usually, parallel veins, their flowers are mostly in three, or some multiple of three, parts, and their embryos have but a single cotyledon, with the first leaves alternate. The endogens constitute one of the great primary classes of plants, and in…

l addition of a new layer to the outside next to the bark. The leaves are commonly netted-veined, and the number of cotyledons is two, or, very rarely, several in a whorl. Cf. Endogen. Gray.

Let out of the veins. [Obs.] "Extravenate blood." Glanvill.

Of or pertaining to the face; as, the facial artery, vein, or nerve. -- Fa"cial*ly, adv. Facial angle (Anat.), the angle, in a skull, included between a straight line (ab, in the illustrations), from the most prominent part of the forehead to the front efge of the upper jaw bone, and another (cd) from this point to th…

Having the nerves or veins arranged in a radiating manner; -- said of certain leaves, and of the winfs of some insects.

A dislocation of the strata of the vein.

A small lateral lode falling into the main lode or mineral vein. Ure.

e of small threadlike worms, also of filaments of coagulated blood, from the rupture of a vein; -- called also backworm. Sir T. Browne.

ssure separating the frontal from the temporal lobe. See Illust. under Brain. -- Fissure vein (Mining), a crack in the earth's surface filled with mineral matter. Raymond.

A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal. Raymond.

A sharp instrument used for opening veins, lancing gums, etc.; a kind of lancet. Fleam tooth, a tooth of a saw shaped like an isosceles triangle; a peg tooth. Knight.

ter, and thus liable to be lost. -- Float ore, water-worn particles of ore; fragments of vein material found on the surface, away from the vein outcrop. Raymond. -- Float stone (Arch.), a siliceous stone used to rub stonework or brickwork to a smooth surface. -- Float valve, a valve or cock acted upon by a float. Se…