Amnion
nounverified·updated May 18, 2026
thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
Framework senses
- §1
- thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
- §1 · legacy_primary
- thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)DR-088 backfill from the noun definition column