Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.
Related to pilus: piles, pili, mesosome, F pilus


n. pl. pi·li (-lī′)
A hair or hairlike structure, especially a proteinaceous structure projecting from the surface of a bacterium that is smaller than a flagellum and functions in DNA transfer during conjugation and, usually with other such structures, in adhesion.



(ˈpaɪ ləs)

n., pl. -li (-lī).
a hair or hairlike structure.
[1955–60; < Latin]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pilus - any of the cylindrical filaments characteristically growing from the epidermis of a mammal; "there is a hair in my soup"
mammal, mammalian - any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk
filum, filament - a threadlike structure (as a chainlike series of cells)
ingrown hair - a hair that does not emerge from the follicle but remains embedded in the skin (usually causing inflammation)
2.pilus - hairlike structure especially on the surface of a cell or microorganism
microorganism, micro-organism - any organism of microscopic size
hair - a filamentous projection or process on an organism
References in periodicals archive ?
s (OTC: TAUG) wholly owned Pilus Energy LLC microbial technology subsidiary, the company said.
Pilus genes were PCR amplified by using primers specifically annealed to conserved genomic regions external to the coding sequences as described (8).
The hemorrhagic coli pilus (HCP) of Escherichia coli 0157:H7 is an inducer of proinflammatory cytokine secretion in intestinal epithelial cells.
Se ha reportado que este pilus tipo 1 juega un papel importante en los mecanismos de colonizacion, adhesion e invasion del microorganismo al hospedero humano (Barocchi et al.
A single bacterial cell can make more than one type of pilus, notes Hultgren.
29 January 2014 - US diversified company Tauriga Sciences Inc (OTCMKTS:TAUG) said it had closed the acquisition of local alternative cleantech energy solutions developer Pilus Energy LLC.
Mutanolysin extracts were prepared from pelleted bacteria as described (16,17) and used to detect pili encoded by the srtF and srtG pilus clusters by Western blotting with antibodies directed against the major subunit of each pilus (16,17).
24 December 2013 - US diversified company Tauriga Sciences Inc (OTCMKTS:TAUG) said today that it was committed to completing the planned purchase of local alternative cleantech energy solutions developer Pilus Energy LLC, despite the recent downward trend in target's stock price.
Moreover, we have shown that this type IV pilus can rotate.