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expand

[ik-spand] /ɪkˈspænd/
verb (used with object)
1.
to increase in extent, size, volume, scope, etc.:
Heat expands most metals. He hopes to expand his company.
2.
to spread or stretch out; unfold:
A bird expands its wings.
3.
to express in fuller form or greater detail; develop:
to expand a short story into a novel.
4.
Mathematics.
  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)
5.
to increase or grow in extent, bulk, scope, etc.:
Most metals expand with heat. The mind expands with experience.
6.
to spread out; unfold; develop:
The buds had not yet expanded.
7.
to express something more fully or in greater detail (usually followed by on or upon):
to expand on a statement.
Origin of expand
late Middle English
1400-1450
1400-50; late Middle English expanden < Latin expandere to spread out, equivalent to ex- ex-1 + pandere to extend, stretch
Related forms
expandable, expandible, adjective
expandability, expandibility, noun
nonexpanding, adjective
overexpand, verb
preexpand, verb (used with object)
reexpand, verb
self-expanding, adjective
superexpand, verb
unexpandable, adjective
unexpanding, adjective
Can be confused
expand, expend (see synonym study at the current entry)
Synonyms
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.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for expand upon
Contemporary Examples
Historical Examples
  • I am not going to expand upon the history of my silent relationship to Mary during that time.

  • Several decisions not only adopted the obiter dictum of the Osborne case, above described, but proceeded to expand upon it.

  • If I suffer myself to expand upon my feelings, there will be no end of this, Bob.

  • She guessed this, having a saving sense of humour, but did not expand upon it, not being inclined to humour at the moment.

    Mrs. Balfame Gertrude Franklin Horn Atherton
  • Kullak took advantage of the occasion to expand upon all the things an artist must be able to do, until my heart died within me.

  • He chose to expand upon Macartney, the nearest he dared get to the subject of his thoughts.

    Love and Lucy Maurice Henry Hewlett
  • I will not expand upon the thought; it would lead me too far afield, but those who have understanding will know what I mean.

    When the World Shook H. Rider Haggard
British Dictionary definitions for expand upon

expand

/ɪkˈspænd/
verb
1.
to make or become greater in extent, volume, size, or scope; increase
2.
to spread out or be spread out; unfold; stretch out
3.
(intransitive) often foll by on. to enlarge or expatiate on (a story, topic, etc) in detail
4.
(intransitive) to become increasingly relaxed, friendly, or talkative
5.
(maths) to express (a function or expression) as the sum or product of terms
Derived Forms
expandable, adjective
Word Origin
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
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Word Origin and History for expand upon

expand

v

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.

Online Etymology Dictionary, © 2010 Douglas Harper
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