Plural of pilus. [L.]
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pili pl of PILUS
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(fimbriae)
hairlike processes present on the surface of certain bacteria. They are thought to be involved in adhesion of bacteria to other cells and in transfer of DNA during conjugation.
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pi·li (piґli) sing. piґlus [L.] [TA] the hairs growing out of the skin; see hair.Medical dictionary. 2011.