the act or process of assimilating; state or condition of being assimilated.
Physiology. the conversion of absorbed food into the substance of the body.
Botany. the total process of plant nutrition, including photosynthesis and the absorption of raw materials.
Sociology. the merging of cultural traits from previously distinct cultural groups, not involving biological amalgamation.
Phonetics. the act or process by which a sound becomes identical with or similar to a neighboring sound in one or more defining characteristics, as place of articulation, voice or voicelessness, or manner of articulation, as in [gram-pah] for grandpa. Compare dissimilation ( def 2 ).

1595–1605; < Latin assimilātiōn- (stem of assimilātiō). See assimilate, -ion

antiassimilation, noun, adjective
nonassimilation, noun
reassimilation, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin & History

c.1600, "act of assimilating," from L. assimilationem "likeness, similarity," noun of action from assimilatus, pp. of assimilare (see assimilate). Psychological sense is from 1855.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

assimilation as·sim·i·la·tion (ə-sĭm'ə-lā'shən)

  1. The incorporation of digested substances from food into the tissues of an organism.

  2. The amalgamation and modification of newly perceived information and experiences into the existing cognitive 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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American Heritage
Science Dictionary
assimilation   (ə-sĭm'ə-lā'shən)  Pronunciation Key 
The conversion of nutrients into living tissue; constructive metabolism.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

assimilation definition

The process by which a person or persons acquire the social and psychological characteristics of a group: “Waves of immigrants have been assimilated into the American culture.”

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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