Definitions
from The American Heritage® Dictionary of the English Language, 4th Edition
 n. Mathematics An algebraic expression consisting of only one term.
 n. Biology A taxonomic name consisting of a single word.
from Wiktionary, Creative Commons Attribution/ShareAlike License
 adj. Relative to an algebraic expression consisting of one term.
 n. A single term consisting of a product of variables with positive integer exponents.
 n. A single term consisting of a product of numbers and variables with positive integer exponents.
from the GNU version of the Collaborative International Dictionary of English
 n. A single algebraic expression; that is, an expression unconnected with any other by the sign of addition, substraction, equality, or inequality.
 adj. Consisting of but a single term or expression.
from The Century Dictionary and Cyclopedia
 In algebra, consisting of only one term, and not of several added together.
 In zoology and botany, same as mononomial.
 n. In algebra, an expression or quantity consisting of a single term. See binomial. Also monome.
Etymologies
mon(o) + (bin)omial.
(American Heritage® Dictionary of the English Language, Fourth Edition)Syncopic form of mononomial. (Wiktionary)
Examples

A _monomial_ in algebra is a quantity which consists of a _single term_.
Orthography As Outlined in the State Course of Study for Illinois

= 1515t = 30 you then subtract the 15 that is on its own to eliminate the monomial.
Comments
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