Definition of mononomial in US English:

mononomial

noun

  • 1Mathematics= "monomial". rare.

  • 2Chiefly Taxonomy. A name or expression consisting of one word only.

adjective

  • Chiefly Taxonomy. Designating a name or expression consisting of one word only.

Origin

Mid 19th century; earliest use found in Thomas De Quincey (1785–1859), essayist. From mono- + -nomial, as alteration of monomial.

Pronunciation

mononomial

/mɒnə(ʊ)ˈnəʊmɪəl/