amnios
1. [ noun ] (botany,anatomy,zoology,embryology) thin innermost membranous sac enclosing the developing embryo in higher vertebrates (Amniota: reptiles; birds; mammals)
Synonyms: amniotic_sac amnion
Related terms: sac membrane amniote fetal_membrane mammal
Similar spelling:   amos
  Amis
  amiss
  Amish
  amigo
  Amico
  Ames
  amnic
  Amick
  amuse
  amass