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[uh-spahr-teym, a-spahr-, as-per-teym] /əˈspɑr teɪm, æˈspɑr-, ˈæs pərˌteɪm/
a white, crystalline, odorless, slightly water-soluble noncarbohydrate powder, C 14 H 18 N 2 O 5 , synthesized from amino acids, that is 150–200 times as sweet as sugar: used as a low-calorie sugar substitute in soft drinks, table sweeteners, and other food products.
Origin of aspartame
1970-75; aspart(yl phenyl)a(linine) m(ethyl) e(ster), the powder's chemical name Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for aspartame


an artificial sweetener produced from aspartic acid. Formula: C14H18N2O5
Word Origin
C20: from aspart(ic acid) + (phenyl)a(lanine) m(ethyl) e(ster)
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 aspartame

commercial name of an artificial sweetener, 1973, from aspartic acid (1836), formed irregularly from asparagine (1813), a compound found in asparagus, beet-root, etc., from asparagus + chemical suffix -ine (2). The reason for -ame is unknown.

Online Etymology Dictionary, © 2010 Douglas Harper
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aspartame in Medicine

aspartame as·par·tame (ās'pər-tām', ə-spär'-)
A low-calorie, artificial sweetening agent derived from aspartic acid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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aspartame in Science
  (ās'pər-tām', ə-spär'-)   
An artificial sweetener formed from aspartic acid. Chemical formula: C14H18N2O5.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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