dysmature dys·ma·ture (dĭs'mə-ty&oobreve;r', -t&oobreve;r', -ch&oobreve;r')
adj.
Of, relating to, or characteristic of faulty embryologic development, often leading to structural and/or functional abnormalities.
Relating to or characteristic of an infant whose birth weight is inappropriately low for its gestational age.