Definitions

1. adjective

relating to or characterized by olefins, especially in a chemical context

“The olefinic compounds in the laboratory were highly flammable.”

2. noun

a compound or mixture that contains olefins

“The refinery produced large quantities of olefinic substances for industrial use.”

3. adverb

in a manner characterized by olefins, especially in a chemical reaction or process

“The catalyst was used olefinically to speed up the reaction.”