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That branch of mathematics which treats of the relations of the sides and angles of triangles, which the methods of deducing from certain given parts other required parts, and also of the general relations which exist between the trigonometrical functions of arcs or angles.

A figure composed of three branches, usually curved, radiating from a center, as the figure composed of three human legs, with bent knees, which has long been used as a badge or symbol of Sicily and of the Isle of Man.

Three times ternate; -- applied to a leaf whose petiole separates into three branches, each of which divides into three parts which each bear three leafiets.

One of the small branches of a stag's antler.

A stout stem, as of a tree, with the branches lopped off, to produce rapid growth. Gardner.

The stem, or body, of a tree, apart from its limbs and roots; the main stem, without the branches; stock; stalk. About the mossy trunk I wound me soon, For, high from ground, the branches would require Thy utmost reach. Milton.

A small shoot or branch of a tree or other plant, of no definite length or size. The Britons had boats made of willow twigs, covered on the outside with hides. Sir T. Raleigh. Twig borer (Zoöl.), any one of several species of small beetles which bore into twigs of shrubs and trees, as the apple-tree twig borer (Amphice…

A branch of lithography in which impressions from printers' types are transferred to stone for reproduction. -- Ty`po*lith`o*graph"ic (#), a.

A beginner in learning; one who is in the rudiments of any branch of study; a person imperfectly acquainted with a subject; a novice. [Written also tiro.] The management of tyros of eighteen Is difficult. Cowper.

The postaxial bone of the forearm, or branchium, corresponding to the fibula of the hind limb. See Radius.

Any marine tectibranchiate gastropod of the genus Umbrella, having an umbrella-shaped shell; -- called also umbrella shell. Umbrella ant (Zoöl.), the sauba ant; -- so called because it carries bits of leaves over its back when foraging. Called also parasol ant. -- Umbrella bird (Zoöl.), a South American bird (Cephalop…

A lower branch.

Not lobed, cleft, or branched; entire.

Having but one branch.

mparting instruction, examining students, and otherwise promoting education in the higher branches of literature, science, art, etc., empowered to confer degrees in the several arts and faculties, as in theology, law, medicine, music, etc. A university may exist without having any college connected with it, or it may c…

A genus of lichens, most of the species of which have long, gray, pendulous, and finely branched fronds. Usnea barbata is the common bearded lichen which grows on branches of trees in northern forests.

g to in invest, or sheathe; sheathing. Vaginant leaf (Bot.), a leaf investing the stem or branch by its base, which has the form of a tube.

es. 2. Thallogens. -- Plants without distinct stem and leaves, consisting of a simple or branched mass of cellular tissue, or educed to a single cell. Reproduction effected variously. Divided into Algæ, which contain chlorophyll or its equivalent, and which live upon air and water, and Fungi, which contain no chloroph…

One of the similar branches of the framework of a leaf.

Marked with veins; veined; as, a venous leaf. Venous leaf (Bot.), a leaf having vessels branching, or variously divided, over its surface. -- Venous hum (Med.), a humming sound, or bruit, heard during auscultation of the veins of the neck in anæmia. -- Venous pulse (Physiol.), the pulse, or rhythmic contraction, some…