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
British Dictionary definitions for expandability
Word Origin for expand
Word Origin and History for expandability
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.