noun. A microscopic hairlike process extending from the surface of a cell or unicellular organism. Capable of rhythmical motion, it acts in unison with other such structures to bring about the movement of the cell or of the surrounding medium.

noun. An eyelash.

noun. One of the hairs along the margin or edge of a structure, such as a leaf, usually forming a fringe.

noun. In anatomy, one of the hairs which grow from the margin of the eyelids; an eyelash.

noun. One of the minute, generally microscopic, hair-like processes of a cell or other part or organ of the body, or of an entire organism, permanently growing upon and projecting from a free surface, capable of active vibratile or ciliary movement, producing currents in surrounding media, as air or water, and thus serving as organs of ingestion or egestion, prehension, locomotion, etc.

noun. In botany: In mosses, one of the hair-like processes within the peristome.

noun. One of the microscopic hair-like appendages which are often present upon the reproductive bodies, such as antherozoids and zoospores of cryptogams. They are frequently two in number and vibrate with great rapidity, producing locomotion.

noun. In entomology, a hair set with others; a fringe, like eyelashes, generally on the leg or margins of the wings of insects.

noun. See cilia.

noun. A hairlike organelle projecting from a eukaryotic cell (such as unicellular organism or one cell of a multicelled organism). These structures serve either for locomotion by moving or as sensors.

noun. a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms

noun. any of the short curved hairs that grow from the edges of the eyelids