-oyl
noun combining form
-o·yl
| \ əwəl, ə(ˌ)wil, əˌwēl\
plural -s
Definition of -oyl
: acid radical
—used in the system of nomenclature adopted by the International Union of Pure and Applied Chemistry in names of radicals derived from acids whose names end in -oic decanoyl and also most other organic acids oleoylphthaloyl
— compare -yl
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