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protostome
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pro•to•stome
(prō
′
tə stōm′),
USA pronunciation
n.
[
Zool.
]
Zoology
any member of the lower invertebrate phyla in which the mouth appears before the anus during development, cleavage is spiral and determinate, and the coelom forms as a splitting of the mesoderm. Cf.
deuterostome.
proto
- + -
stome
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更新时间:2025/7/23 10:18:39