a. [f. BI- pref.2 1 + NERVATE, f. L. nerv-us NERVE.] Having two nerves: applied a. in Bot. to leaves having two longitudinal ribs; b. in Ent. to insect-wings supported by two nerves only.
1842. in Brande, Dict. Sc.
a. [f. BI- pref.2 1 + NERVATE, f. L. nerv-us NERVE.] Having two nerves: applied a. in Bot. to leaves having two longitudinal ribs; b. in Ent. to insect-wings supported by two nerves only.
1842. in Brande, Dict. Sc.
