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Parthenogenesis is a 15 letter word which starts with the letter P and ends with the letter S for which we found 2 definitions.

(n.) The production of new individuals from virgin females by means of ova which have the power of developing without the intervention of the male element; the production without fertilization of cells capable of germination. It is one of the phenomena of alternate generation. Cf. Heterogamy and Metagenesis.
(n.) The production of seed without fertilization believed to occur through the nonsexual formation of an embryo extraneous to the embrionic vesicle.
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