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amniote
am·ni·ote A0260250 (ăm′nē-ōt′)n. Any of numerous vertebrates of the group Amniota, characteristically having an amnion during embryonic development and including the reptiles, birds, and mammals.
[From New Latin amniōta, amniotes, from Greek amniōn, amnion (influenced by amniotic).]amniote (ˈæmnɪəʊt) n (Zoology) any vertebrate animal, such as a reptile, bird, or mammal, that possesses an amnion, chorion, and allantois during embryonic development. Compare anamnioteThesaurus| Noun | 1. |  amniote - any member of the Amniota craniate, vertebrate - animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or craniumAmniota - higher vertebrates (reptiles, birds and mammals) possessing an amnion during developmentamnion, amnios, amniotic sac - thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)chorion - the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals) |
amniote
amniote [am´ne-ōt] any animal that develops an amnion.amniote (ăm′nē-ōt′)n. Any of numerous vertebrates of the group Amniota, characteristically having an amnion during embryonic development and including the reptiles, birds, and mammals.amniote any land vertebrate which possesses an AMNION, CHORION and ALLANTOIS, i.e. reptiles, birds and mammals.Patient discussion about amnioteQ. what does it mean when an ultrasound shows an empty amniotic sac and no baby? A. This exact thing happened with my friend who is now 22 weeks with her first baby. She had 2 additional sacs - both empty - and the doctor said that the pregnancy had probably started out as triplets but that only one of the embryos had actually established and continued to grow.
Her doctor said it is very common for a woman to have more than one egg fertilize but that in most cases the pregnancy continues as a singleton only. She told my friend that the empty sacs would just disappear through time (which they did) and that they posed no danger to her baby.
More discussions about amnioteamniote
Words related to amniotenoun any member of the AmniotaRelated Words- craniate
- vertebrate
- Amniota
- amnion
- amnios
- amniotic sac
- chorion
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