verb (used with object)
- to write (a mathematical expression) so as to show the products of its factors.Compare factor(def 10).
- to rewrite (a mathematical expression) as a sum, product, etc., of terms of a particular kind: to expand a function in a power series.
verb (used without object)
Origin of expand
Synonyms for expand
Word Origin for expand
early 15c., "spread out, spread flat," from Anglo-French espaundre, Middle French espandre and directly from Latin expandere "to spread out, unfold, expand," from ex- "out" (see ex-) + pandere "to spread, stretch" (see pace (n.)). Sense of "grow larger" first recorded 1640s. Related: Expanded; expanding.