codimer

noun

co·​di·​mer

(ˈ)kō¦dīmə(r)

plural -s

: a copolymer formed from two dissimilar molecules (as two olefins)

specifically, in petroleum refining : the mixture of hydrocarbons formed by the copolymerization of the butylenes which on hydrogenation yields a mixture of octanes used as a blending agent in aviation gasoline

Word History

Etymology

co- + dimer

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