peptidoid

[pĕptĭ-doid′]
n.
  1. A compound formed by the condensation of two amino acids, with the linkage involving at least one group that is not a carboxyl or an amino group.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.