isosterism

[ ahy-sos-tuh-riz-uhm ]
/ aɪˈsɒs təˌrɪz əm /

noun

Chemistry. the quality or state of being isosteric.
Pharmacology. the theory that isosteric compounds have identical or similar pharmacological action.

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Origin of isosterism

First recorded in 1860–65; isostere + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020