Lasting an indefinitely long time; eternal; permanent. → perpetual motion; → perpetual calendar.
M.E. perpetuall, from O.Fr. perpetuel, from L. perpetualis "permanent," from perpetuus "continuous, universal," from perpetis, genitive of Old L. perpes "lasting;"
Hamišegi from hamišé "always;" Mid.Pers. hamišag, from anÃ´šag "immortal," from Av. an-aoša-, from negation prefix → an- + aošah- "death; ruin; corruption" (Mid.Pers. hÃ´š "death;" Mod.Pers. hÃ´š, huš "death; mind; intellect"); cf. derivatives Sogd. nÃ´šé "immortal," nÃ´šak "always;" Mod.Pers. nÃ´š, nuš "the water of immortality; sweet; honey."
Fr.: calendrier perpétuel
A chart or mechanical device that indicates the day of the week for any given date over a period of many years.
Fr.: mouvement perpétuel
The motion of a hypothetical machine which, once set in motion, will go on for ever without any losses due to → friction or other forms of → dissipation of energy and without receiving any external energy.