Relating to or describing organisms or embryos that lack an amnion.
From amnion + -ic suffix. An older variant of 'anamniotic,' this term combines Greek an- 'without' + amnion + the -ic adjective suffix common in scientific terminology.
The shift from 'anamnionic' to the more standard 'anamniotic' shows how scientific vocabulary gets standardized—languages naturally prefer regular patterns, so the more common -otic ending eventually won out.
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