n. plTrachearia(Zoöl) A division of Arachnida including those that breathe only by means of tracheæ. It includes the mites, ticks, false scorpions, and harvestmen.
Century Dictionary and Cyclopedia
ntracheariaThe tracheate arachnidans, an order of Arachnida comprising those which breathe by tracheæ alone. It comprises the mites or acarids, the harvestmen or opilionines, the solpugids, and the false scorpions. See Pulmotrachearia. Also Trachearæ and Tracheata.