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amorphous

[uh-mawr-fuh s] /əˈmɔr fəs/
adjective
1.
lacking definite form; having no specific shape; formless:
the amorphous clouds.
2.
of no particular kind or character; indeterminate; having no pattern or structure; unorganized:
an amorphous style; an amorphous personality.
3.
Petrography, Mineralogy. occurring in a mass, as without stratification or crystalline structure.
4.
Chemistry. not crystalline.
5.
Biology. having structural components that are not clearly differentiated, as the nuclear material in certain bacteria.
Origin of amorphous
1725-1735
1725-35; < Greek ámorphos shapeless. See a-6, -morph, -ous
Related forms
amorphously, adverb
amorphousness, noun
Synonyms
1, 2. shapeless, undefined; vague, anomalous.
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for amorphous

amorphous

/əˈmɔːfəs/
adjective
1.
lacking a definite shape; formless
2.
of no recognizable character or type
3.
(of chemicals, rocks, etc) not having a crystalline structure
Derived Forms
amorphism, noun
amorphously, adverb
amorphousness, noun
Word Origin
C18: from New Latin, from Greek amorphos shapeless, from a-1 + morphē shape
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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Contemporary definitions for amorphous
adjective

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Dictionary.com's 21st Century Lexicon
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Word Origin and History for amorphous
adj.

"shapeless," 1731, from Modern Latin amorphus, from Greek amorphos "without form, shapeless, deformed," from a- "without" (see a- (3)) + morphe "form" (see Morpheus). Related: Amorphously; amorphousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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amorphous in Medicine

amorphous a·mor·phous (ə-môr'fəs)
adj.

  1. Lacking definite form; shapeless.

  2. Lacking organization; formless.

  3. Lacking distinct crystalline structure.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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amorphous in Science
amorphous
  (ə-môr'fəs)   
  1. Not made of crystals. Glass, amber, and plastics are amorphous substances.

  2. Lacking definite form or shape.


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