Definition of "binomial" [bi•no•mi•al]

• Consisting of or relating to two names or terms. (adjective)
• Mathematics A polynomial with two terms. (noun)
• Biology A taxonomic name in binomial nomenclature. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "But, over nearly three centuries, the classification system used to organize much of our biological knowledge has remained remarkably arbitrary and ancient: The so-called binomial system of genus and species that Linse and thousands of other biologists use today was first proposed by a Swedish biologist born 300 years ago Wednesday, Carolus Linnaeus."
• "There is in fact a probability distribution, known as the binomial distribution, of how many times the number 1 shows up."
• "He also developed a way to name plants called binomial nomenclature (bi NOH mee ul · NOH mun klay chur)."