[ proh-tee-noid, -tee-uh- ]
/ ˈproʊ tiˌnɔɪd, -ti ə- /

noun Biochemistry.

a polymer of amino acids resembling a biological polypeptide but formed abiotically: suggested as a possible intermediate in protein development during primitive earth conditions.

Nearby words

  1. protein synthesis,
  2. protein-bound iodine,
  3. protein-bound iodine test,
  4. protein-losing enteropathy,
  5. proteinase,
  6. proteinosis,
  7. proteins,
  8. proteinuria,
  9. protend,
  10. protensive

Origin of proteinoid

First recorded in 1955–60; protein + -oid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for proteinoid


[ prōtn-oid′ ]


A proteinlike polypeptide formed abiotically from amino acid mixtures in the presence of heat, it may resemble early evolutionary forms of protein.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.