noun, plural pi·li [pahy-lahy] /ˈpaɪ laɪ/. Biology.
- a hair or hairlike structure.
n. pl. pi•li (-lī′)
- A hair.
- A fine filamentous appendage, somewhat analogous to the flagellum, that occurs on some bacteria.fimbria
noun, plural pi·li [pahy-lahy] /ˈpaɪ laɪ/. Biology.
n. pl. pi•li (-lī′)