Definify.com
Webster 1913 Edition
Persistent
1.
Inclined to persist; having staying qualities; tenacious of position or purpose.
2.
(Biol.)
Remaining beyond the period when parts of the same kind sometimes fall off or are absorbed; permanent;
as,
; – opposed to persistent
teeth or gills; a persistent
calyxdeciduous
, and caducous
.