[ ik-span-did ]
/ ɪkˈspæn dɪd /


increased in area, bulk, or volume; enlarged: an expanded version of a story.
spread out; extended: the expanded frontiers of the Roman Empire.
Also extended. Printing. (of type) wider in proportion to its height.Compare condensed(def 4).

Origin of expanded

late Middle English word dating back to 1400–50; see origin at expand, -ed2

Related forms

Definition for expanded (2 of 2)


[ ik-spand ]
/ ɪkˈspænd /

verb (used with object)

to increase in extent, size, volume, scope, etc.: Heat expands most metals. He hopes to expand his company.
to spread or stretch out; unfold: A bird expands its wings.
to express in fuller form or greater detail; develop: to expand a short story into a novel.
  1. to write (a mathematical expression) so as to show the products of its factors.Compare factor(def 10).
  2. 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

1400–50; late Middle English expanden < Latin expandere to spread out, equivalent to ex- ex-1 + pandere to extend, stretch


1 extend, swell, enlarge. See increase. Expand, dilate, distend, inflate imply becoming larger and filling more space. To expand is to spread out, usually in every direction: to expand one's chest. To dilate is especially to increase the width or circumference, and applies to space enclosed within confines or to hollow bodies: to dilate the pupils of the eyes. To distend is to stretch, often beyond the point of natural expansion: to distend an artery. To inflate is to blow out or swell a hollow body with air or gas: to inflate a balloon.

Related forms

Can be confused

expand expend (see synonym study at the current entry)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for expanded

British Dictionary definitions for expanded (1 of 2)


/ (ɪkˈspændɪd) /


Also: extended (of printer's type) wider than usual for a particular heightCompare condensed
(of a plastic) having been foamed during manufacture by the introduction of a gas in order to make a light packaging material or heat insulatorexpanded polystyrene See also expanded metal

British Dictionary definitions for expanded (2 of 2)


/ (ɪkˈspænd) /


to make or become greater in extent, volume, size, or scope; increase
to spread out or be spread out; unfold; stretch out
(intr often foll by on) to enlarge or expatiate on (a story, topic, etc) in detail
(intr) to become increasingly relaxed, friendly, or talkative
maths to express (a function or expression) as the sum or product of terms

Derived Forms

expandable, adjective

Word Origin for expand

C15: from Latin expandere to spread out, from pandere to spread, extend
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012