Diurnal, di-ur -nal, a

relating to a day or to the daytime; happening every day; performed in a day; performed in twenty-four hours; applied to diseases whose exacerbations are in the daytime [Med.]: s. a day-book; a journal (L. dies, a day). Diurnally, diur'-nal-le, ad. daily; every day. Diurnal ne , di-ur'- nal-nes, s. the quality of being diurnal.