amniotic
amniotic Applied to a type of development typical of higher vertebrates (reptiles, birds, and mammals), in which the amnion (a protective membrane) surrounds the embryo in a bag of (‘amniotic’) fluid. Evolutionarily, the amnion is primitively associated with a shell and is capable of gaseous exchange; its development thus enabled eggs to be laid on dry land for the first time in vertebrate evolution. Compare ANAMNIOTIC.
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amniote , amniote A vertebrate whose embryos are totally enclosed in a fluid-filled sac – the amnion. The evolution of the amnion provided the necessary fluid… Antic , antic •achromatic, acrobatic, Adriatic, aerobatic, anagrammatic, aquatic, aristocratic, aromatic, Asiatic, asthmatic, athematic, attic, autocratic, a… Hydrostatic , hydrostatic •achromatic, acrobatic, Adriatic, aerobatic, anagrammatic, aquatic, aristocratic, aromatic, Asiatic, asthmatic, athematic, attic, autocra… aseptic , aseptic •achromatic, acrobatic, Adriatic, aerobatic, anagrammatic, aquatic, aristocratic, aromatic, Asiatic, asthmatic, athematic, attic, autocratic,… Apoplectic , apoplectic •achromatic, acrobatic, Adriatic, aerobatic, anagrammatic, aquatic, aristocratic, aromatic, Asiatic, asthmatic, athematic, attic, autocrat… Quadratic , quadratic •achromatic, acrobatic, Adriatic, aerobatic, anagrammatic, aquatic, aristocratic, aromatic, Asiatic, asthmatic, athematic, attic, autocrati…
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