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Definition of: spermatium
(spûr·mā′shē·əm) noun plural ·ti·a (-shē·ə) Bot.
1. A minute spore in certain lichens and fungi: formerly regarded as a non–motile male gamete.
2. A non–motile gamete which, in the red algae, unites with the carpogonium. [<NL <Gk. spermation, dim. of sperma a seed]
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