n.;
a. [ Cf.F. tracheal. ] Of or pertaining to the trachea; like a trachea. [ 1913 Webster ]
‖n. pl. [ NL. ] (Zool.) A division of Arachnida including those that breathe only by means of tracheae. It includes the mites, ticks, false scorpions, and harvestmen. [ 1913 Webster ]
a. Tracheal; breathing by means of tracheae. --
‖n. pl. [ NL. ] (Zool.) An extensive division of arthropods comprising all those which breathe by tracheae, as distinguished from Crustacea, which breathe by means of branchiae. [ 1913 Webster ]
a. (Zool.) Breathing by means of tracheae; of or pertaining to the Tracheata. [ 1913 Webster ]
n. (Zool.) Any arthropod having tracheae; one of the Tracheata. [ 1913 Webster ]