| 单词 | amnion |
| 释义 | Word Frequency amnion(ˈæmnɪən) nounWord forms: plural -nions or -nia (-nɪə) the innermost of two membranes enclosing an embryonic reptile, bird, or mammal See also chorion Word origin C17: via New Latin from Greek: a little lamb, from amnos a lamb |
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