‖n.; pl. Pyrexiæ [ NL., fr. Gr. &unr_; to be feverish, akin to &unr_; fever. ] (Med.) The febrile condition. [ 1913 Webster ]

a. (Med.) Relating to apyrexy. “Apyrexial period.” Brande & C. [ 1913 Webster ]

{ ‖ } n. [ NL. apyrexia, fr. Gr. &unr_;; 'a priv. + &unr_; to be feverish, fr. &unr_; fire: cf. F. apyrexie. ] (Med.) The absence or intermission of fever. [ 1913 Webster ]

‖n. [ NL. See Hyper-, and Pyrexia. ] (Med.) A condition of excessive fever; an elevation of temperature in a disease, in excess of the limit usually observed in that disease. [ 1913 Webster ]

{ } a. (Med.) Of or pertaining to fever; feverish. [ 1913 Webster ]