WordReference Random House Unabridged Dictionary of American English © 2025
pro•tein•oid
(prō′tē noid′, -tē ə-),USA pronunciation n. [Biochem.]
- Biochemistrya polymer of amino acids resembling a biological polypeptide but formed abiotically: suggested as a possible intermediate in protein development during primitive earth conditions.
- protein + -oid 1955–60