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词汇 primary endosperm nucleus
释义

Definition of primary endosperm nucleus in English:

primary endosperm nucleus

noun
Botany
  • The triploid nucleus which results from the fusion of the two polar nuclei of the embryo sac with a sperm nucleus, and which (usually) divides to form the endosperm tissue.

Origin

Late 19th century; earliest use found in The Botanical Gazette.

Definition of primary endosperm nucleus in US English:

primary endosperm nucleus

noun
Botany
  • The triploid nucleus which results from the fusion of the two polar nuclei of the embryo sac with a sperm nucleus, and which (usually) divides to form the endosperm tissue.

Origin

Late 19th century; earliest use found in The Botanical Gazette.

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