Lenten of, in, or appropriate to Lent. Old English lencten ‘spring, Lent’, of Germanic origin, is related to long, perhaps with reference to the lengthening of the day in spring; it is now interpreted as coming directly from Lent + the suffix -en.
Lenten fare food appropriate to Lent, especially that without meat.
Lenten rose a hellebore that is cultivated for its flowers which appear in late winter or early spring.

Lent·en / ˈlent(ə)n/ • adj. [attrib.] of, in, or appropriate to Lent: Lenten food.