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preformation
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pre•for•ma•tion
(prē′fôr mā
′
shən),
USA pronunciation
n.
previous formation.
Biology
(formerly) the theory that the individual, with all its parts, preexists in the germ cell and grows from microscopic to normal proportions during embryogenesis (opposed to
epigenesis
).
pre
- +
formation
1725–35
pre′for•ma
′
tion•ar•y
,
adj.
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rhizoctonia
rhizogenic
rhizoid
rhizoidal
rhizome
rhizomorph
rhizomorphous
rhizophagous
rhizopod
rhizotomy
rh negative
rho
rhod-
rhod
rhoda
rhodamine
rhode island
rhode island bent
rhode islander
rhode island red
rhode island white
rhodes
rhodes grass
rhodesia
rhodesia and nyasaland, federation of
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更新时间:2025/7/23 12:56:51