- 1. n. pl. That group of vertebrates which develops in its embryonic life the envelope called the amnion. It comprises the reptiles, the birds, and the mammals. Source: opted
- 2. n. higher vertebrates (reptiles, birds and mammals) possessing an amnion during development Source: wordnet
- 3. That group of vertebrates which develops in its embryonic life the envelope called the amnion. It comprises the reptiles, the birds, and the mammals. Source: webster
- 4. That group of vertebrates which develops in its embryonic lifethe envelope called the amnion. It comprises the reptiles, the birds,and the mammals. Source: adambom
- 5. n higher vertebrates (reptiles, birds and mammals) possessing an amnion during development Source: ecdict
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amniota
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amnionbirdsmammalsreptilesvertebratescalledcomprisesdevelopsembryonicenvelopegroupdevelopmenthigherlifepossessing