a. [ L. bis twice + nervus sinew, nerve. ] 1. (Bot.) Two-nerved; -- applied to leaves which have two longitudinal ribs or nerves. [ 1913 Webster ]

2. (Zool.) Having only two nerves, as the wings of some insects. [ 1913 Webster ]

v. t. [ imp. & p. p. Enervated p. pr. & vb. n. Enervating. ] [ L. enervatus, p. p. of enervare, fr. enervis nerveless, weak; e out + nervus nerve. See Nerve. ] To deprive of nerve, force, strength, or courage; to render feeble or impotent; to make effeminate; to impair the moral powers of. [ 1913 Webster ]

A man . . . enervated by licentiousness. Macaulay. [ 1913 Webster ]

And rhyme began t' enervate poetry. Dryden.

Syn. -- To weaken; enfeeble; unnerve; debilitate. [ 1913 Webster ]

a. [ L. enervatus, p. p. ] Weakened; weak; without strength of force. Pope. [ 1913 Webster ]

adj. lacking strength or vigor.
Syn. -- adynamic, asthenic, debilitated. [ WordNet 1.5 ]

adj. causing the loss of strength or vigor.
Syn. -- debilitative, enfeebling, weakening. [ WordNet 1.5 ]

n. [ L. enervatio: cf. F. énervation. ] 1. The act of weakening, or reducing strength. [ 1913 Webster ]

2. The state of being weakened; effeminacy. Bacon. [ 1913 Webster ]

a. Having power, or a tendency, to enervate; weakening. [ R. ] [ 1913 Webster ]

v. t. [ See Innerve. ] (Anat.) To supply with nerves; as, the heart is innervated by pneumogastric and sympathetic branches. [ 1913 Webster ]

n. [ Cf. F. innervation. ] 1. The act of innerving or stimulating. [ 1913 Webster ]

2. (Physiol.) Special activity excited in any part of the nervous system or in any organ of sense or motion; the nervous influence necessary for the maintenance of life, and the functions of the various organs. [ 1913 Webster ]

3. (Anat.) The distribution of nerves in an animal, or to any of its parts. [ 1913 Webster ]

n. [ L. ] (Rom. Myth.) The goddess of wisdom, of war, of the arts and sciences, of poetry, and of spinning and weaving; -- identified with the Grecian Pallas Athene. [ 1913 Webster ]

a. (Bot.) Nerved. [ 1913 Webster ]

n. The arrangement of nerves and veins, especially those of leaves; neuration. [ 1913 Webster ]

The outlines of the fronds of ferns, and their nervation, are frail characters if employed alone for the determination of existing genera. J. D. Hooker. [ 1913 Webster ]

a. [ NL. trinervatus; pref. tri- + L. nervus nerve. ] (Bot.) Having three ribs or nerves extending unbranched from the base to the apex; -- said of a leaf. Gray. [ 1913 Webster ]

a. Enervate. [ Obs. ] [ 1913 Webster ]