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.
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.
to increase or grow in extent, bulk, scope, etc.: Most metals expand with heat. The mind expands with experience.
to spread out; unfold; develop: The buds had not yet expanded.
to express something more fully or in greater detail (usually followed by on or upon): to expand on a statement.
- ex·pand·a·ble, ex·pand·i·ble, adjective
- ex·pand·a·bil·i·ty, ex·pand·i·bil·i·ty, noun
- non·ex·pand·ing, adjective
- o·ver·ex·pand, verb
- pre·ex·pand, verb (used with object)
- re·ex·pand, verb
- self-ex·pand·ing, adjective
- su·per·ex·pand, verb
- un·ex·pand·a·ble, adjective
- un·ex·pand·ing, adjective
- expand , expend
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use expand in a sentence
Then the novel coronavirus forced dozens of states to quickly expand absentee voting, and the slowdowns got more dramatic.Election live updates: Trump returns to Wisconsin; Biden to face live audience at town hall | Colby Itkowitz, Felicia Sonmez, John Wagner | September 17, 2020 | Washington Post
In response to the coronavirus, nearly half of all states expanded access to mail ballots for their primaries, either by allowing fear of the coronavirus as a reason or proactively sending an application or ballot to every registered voter.
Insider has had its sights on Asia Pacific to expand its tech and business coverage for some time.‘We’re about hiring journalists’: Insider Inc. launches third global news hub in Singapore | Lucinda Southern | September 17, 2020 | Digiday
They were nominated just as the program prepared to expand one of its available investment funds to also reflect about two dozen emerging-market countries, including China.Committee delays vote on former political commentator to head Office of Personnel Management | Eric Yoder | September 16, 2020 | Washington Post
A key finding involves a long-standing practice — which was expanded by Congress several times — to deputize Boeing employees to act in behalf of FAA while reviewing aircraft designs.Boeing crashes were the “horrific culmination” of multiple mistakes, House report says | kdunn6 | September 16, 2020 | Fortune
He once experimented with dressing as “Hilda the Wicked Witch” as a way to expand his business to Halloween.Kerry Bentivolio: The Congressman Who Believes in Santa Claus | Ben Jacobs | December 24, 2014 | THE DAILY BEAST
It also provides a critical opportunity to expand the ranks of the middle class.
Dr. Grenci, who agrees, also saw it as a way to expand her own knowledge on the subculture and what makes it so appealing.
The center for Justice and Accountability in San Francisco, and other human rights organizations went to work to expand the law.
And the CENTCOM commander said that ISIS figures could expand dramatically based on the nature of its actions.ISIS Has 9,000 ‘Core Fighters.’ Or Maybe 17,000. Or Possibly 30,000. | Tim Mak | November 6, 2014 | THE DAILY BEAST
His slight, thin, rather graceless figure seemed suddenly to expand, even to grow taller.Ancestors | Gertrude Atherton
In one, which occurs not infrequently, a thickened arm is made to expand into something like a fan-shaped hand, as in Fig. 18.Children's Ways | James Sully
Thus the increase of temperature that augments the elasticity of a fluid confined, would expand it in the same degree.Life of Richard Trevithick, Volume II (of 2) | Francis Trevithick
Those modern marine engines use about the same steam pressure and expand about in the same proportion.Life of Richard Trevithick, Volume II (of 2) | Francis Trevithick
Dr. May looked at his son, and saw his face clear up, his brow expand, and his lips unclose with admiration.The Daisy Chain | Charlotte Yonge
British Dictionary definitions for expand
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
- expandable, adjective
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