dysmature

[dĭs′mə-tur, -chur]
adj.
  1. Of, relating to, or characteristic of faulty embryologic development, often leading to structural and/or functional abnormalities.
  2. Relating to or characteristic of an infant whose birth weight is inappropriately low for its gestational age.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.