n. An artificial waterway for irrigation or navigation.n. In architecture, a channel; a groove; a flute: thus, the canal of the volute is the channel on the face of the circumvolutions inclosed by a list in the Ionic capital.n. In anatomy, a duet; a channel through which a fluid is conveyed or solids pass; a tubular cavity in a part, or a communication between parts. See duet.n. In zoology, the name of sundry grooves, furrows, apertures, etc., as: the channels of various actinozoans;n. the afferent and efferent pores of sponges;n. the groove observed in different parts of certain univalve shells, and adapted for the protrusion of the long cylindrical siphon or breathing-tube possessed by those animals.n. In botany, an elongated intercellular or intrafascicular space, either empty or containing sap, resin, or other substances.n. Inferior, the inferior dental canaln. Median, the canal in the superior maxillary bone containing the middle superior dental nerven. Posterior, the canal in the superior maxillary bone containing the posterior superior dental nerve.n. The canalis incisivus on either side.n. The canales incisivi with the anterior palatine canal in sense a.n. The primitive common and continuous cavity of the brain and spinal cord, not infrequently more or less extensively obliterated in the latter, but in the former modified in the form of the several ventricles and other cavities.n. Inferior, the channel in the inferior maxillary or lower jaw-bone, which transmits the inferior dental nerves and vesselsn. Posterior, one or more fine canals entering the superior maxillary bone about the middle of its posterior surface, and transmitting the posterior dental vessels and nerves.n. One of the canaliculi lacrymales (which see, under canaliculus).n. In echinoderms, a canal of which a part of the wall is formed by the ambulacral nerve and its connections; the track or trace of the ambulacral nerve and its connections.To intersect or cut with canals.n. Same as canaille, 2.n. A long, narrow arm of the sea penetrating far inland: as, Lynn canal, Portland canal, etc.n. The juice-canals or ultimate radicals of the lymph-vessels.n. In sponges, all of the cavities of the body, taken collectively, traversed by the currents of water which nourish the sponge from the time they enter at the pores until they pass out at the osculum.n. A channel which passes through the series of hemal arches beneath the backbone of a fish.n. In sponges, one of the canals which are continuous with the paragastric cavity, as distinguished from an incurrent canal.n. In ctenophorans, a branch of the perradial canal extending into the base of the corresponding tentacle.
