aspartame

UK: /əˈspɑːˌteɪm/

US: /əˈspɑrteɪm, æˈspɑr-, ˈæspɚˌteɪm/

US: (ə spär′tām, a spär′-, as′pər tām′)

WordReference Random House Learner's Dictionary of American English © 2025

as•par•tame /əˈspɑrteɪm, æˈspɑr-, ˈæspɚˌteɪm/   n. 

[uncountable]
1. Nutrition an artificially made white powder that is much sweeter than sucrose and is used as a low-calorie sugar substitute.

WordReference Random House Unabridged Dictionary of American English © 2025

as•par•tame  (ə spär′tām, a spär′-, as′pər tām′), n. 

1. Nutrition a white, crystalline, odorless, slightly water-soluble noncarbohydrate powder, C₁₄H₁₈N₂O₅, 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.

• aspart(yl phenyl)a(linine) m(ethyl) e(ster), the powder's chemical name 1970–75

Collins Concise English Dictionary © HarperCollins Publishers::

aspartame / əˈspɑːˌteɪm/ noun

1. an artificial sweetener produced from aspartic acid. Formula: C₁₄H₁₈N₂O₅

Etymology: 20th Century: from aspart( ic acid) + (phenyl)a(lanine) m(ethyl) e(ster)