polar nucleus
Botany
noun
(In angiosperm reproduction) either of the two haploid nuclei which move from the poles of the embryo sac to the centre and fuse with the male gamete to form the triploid primary endosperm nucleus.
Origin
Late 19th century; earliest use found in Sydney Vines (1849–1934), botanist.
- Sensurround
- sensu stricto
- sent
- sente
- sentence
- sentence adverb
- sentential
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- sententiousness
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- sentiment analysis