P / per-dĭus
adjective

per-dĭus

fem. per-dia · neut. per-dium
all day long; the livelong day
all day long, the livelong day (post-class.): stare solitus Socrates dicitur, pertinaci statu perdius atque pernox, Gell. 2, 1, 1; App. M. 5, p. 161, 11; 9, p. 219, 23.