proto-

proto- definition - medical

proto- or prot-

prefix
  1. First in time: prototype.
  2. First formed; primitive; original: protoplast.
  3. Having the least amount of a specified element or radical: protoporphyrin.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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