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The Collaborative International Dictionary
Proteinaceous

Proteinaceous \Pro`te*i*na"*ceous\, a. (Physiol. Chem.) Of or related to protein; albuminous; proteid.

Wiktionary
proteinaceous

a. Of, pertaining to, or consisting of protein

WordNet
proteinaceous

adj. relating to or of the nature of protein

Usage examples of "proteinaceous".

To add, to these three billion proteinaceous beings, yet another, but one made of plastic and copper?