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Thesaurus: allantois

Alt. of Allantoid

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Related headwords

mammalsdefinitionbirdsdefinitionreptilesdefinitionbelowdefinitionchoriondefinitiondevelopsdefinitionembryonicdefinitionfetaldefinitionhigherdefinitionhindgutdefinitionliesdefinitionmembranedefinitionvasculardefinitionvertebratesdefinitionallantoiddefinitionaltdefinitionappendagedefinitionconnectdefinitionembryosdefinitionfetusdefinitionmembranousdefinitionparentdefinitionservingdefinitionurinarydefinitionvesicledefinitionallanitefamilyallantoicfamilyallantoidalfamily

Definitions

  1. n. Alt. of Allantoid
  2. n. the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)
  3. A membranous appendage of the embryos of mammals, birds, and reptiles, -- in mammals serving to connect the fetus with the parent; the urinary vesicle.
  4. n. the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)