Multiplicate

Multiplicate is an English verb that can mean to multiply or to cause to multiply; to increase in number by producing multiples. The term can also describe rapid reproduction or growth in biology or demography, where a population multiplicates when it increases by repeated multiplication.

In modern mathematical usage, multiply is the standard verb for the operation. Multiplicate is considered archaic or literary and is uncommon in contemporary textbooks or formal writing. When used, it often appears in phrases like to multiplicate two numbers, though such usage is rare and may sound archaic to many readers. The past participle would be multiplicated, but that form is infrequently encountered in everyday language.

Etymology and related forms: The word is derived from Latin multiplicare, from multiplicus meaning manyfold, and is related to the general concept of multiplication. Related English terms include multiplication (the noun for the operation), multiplicity (the state of being many), multiplicative (the corresponding adjective), and in the sense of copying or duplicating, terms like duplicate or triplicate.

Usage notes: Because multiply is clearer and more widely understood, multiplicate tends to be reserved for historical texts, certain formal registers, or stylistic choices where an archaic tone is desired. In general mathematical writing, avoid multiplicate in favor of multiply and related terms.

See also: multiplication, multiplicand, multiplier, product, multiplicative, multiplicity, duplicate, triplicate.