adj. Consisting of or relating to two names or terms. n. 1. Mathematics A polynomial with two terms. 2. Biology A taxonomic name in binomial nomenclature. [From New Latin binōmius, having two names : BI-1 + French nom, name (from Latin nōmen; see NOMINAL).] bi·nomi·al·ly adv. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.