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expansions

 [ik-span-shuhn]   Origin

ex·pan·sion

   [ik-span-shuhn]
noun
1.
the act or process of expanding.
2.
the state or quality of being expanded.
3.
the amount or degree of expanding.
4.
an expanded, dilated, or enlarged portion or form of a thing: The present article is an expansion of one he wrote last year.
5.
anything spread out; expanse.
EXPAND
6.
Mathematics.
a.
the development at length of an expression indicated in a contracted form, as a2 + 2ab + b2 for the expression (a + b)2.
b.
any mathematical series that converges to a function for specified values in the domain of the function, as 1 + x + x2 + … for 1/(1 − x) when x < 1.
7.
Machinery. that part of the operation of an engine in which the volume of the working medium increases and its pressure decreases.
8.
an increase in economic and industrial activity (opposed to contraction).
COLLAPSE
Origin:
1605–15; < Late Latin expānsiōn- (stem of expānsiō) a spreading out. See expanse, -ion

Related forms
ex·pan·sion·al, adjective
an·ti·ex·pan·sion, adjective
non·ex·pan·sion, noun
o·ver·ex·pan·sion, noun
pre·ex·pan·sion, noun
EXPAND
re·ex·pan·sion, noun
self-ex·pan·sion, noun
su·per·ex·pan·sion, noun
COLLAPSE
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Expansions is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a chattering or flighty, light-headed person.
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Etymonline
Word Origin & History

expansion
1610s, "anything spread out;" 1640s, "act of expanding," from Fr. expansion, L.L. expansionem (nom. expansio) "a spreading out," from L. expandere (see expand).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

expansion ex·pan·sion (ĭk-spān'shən)
n.

  1. An increase in size.

  2. The spreading out of a structure, such as a tendon.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
expansion   (ĭk-spān'shən)  Pronunciation Key 

  1. An increase in the volume of a substance while its mass remains the same. Expansion is usually due to heating. When substances are heated, the molecular bonds between their particles are weakened, and the particles move faster, causing the substance to expand.

  2. A number or other mathematical expression written in an extended form. For example, a2 + 2ab + b2 is the expansion of (a + b)2.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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