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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

n. - Central part of a plant ovule.

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Usage examples (10)
  • The nucellus is a cellular tissue enveloping one large cell, the embryo-sac or macrospore.
  • Insemineae include forms in which the nucellus is not developed, and therefore there can be no seed.
  • In some cases the embryo or the embryo-sac sends out suckers into the nucellus and ovular integument.
  • (Liliaceae) polyembryony results from an adventitious production of embryos from the cells of the nucellus around the top of the embryo-sac.
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