diastereomer

[dahy-uh-ster-ee-uh-mer, -steer-] /ˌdaɪ əˈstɛr i ə mər, -ˈstɪər-/

noun, Chemistry.

either of a pair of stereoisomers that are not mirror images of each other.

Also called diastereoisomer

[dahy-uh-ster-ee-oh-ahy-suh-mer, -steer-] /ˌdaɪ əˌstɛr i oʊˈaɪ sə mər, -ˌstɪər-/ (Show IPA).

Compare enantiomer.

Origin of diastereomer

1935-1940

First recorded in 1935-40; dia- + stereo(iso)mer

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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