Webster's Revised Unabridged Dictionary · 1913

Increscent

Increscent , adjective

[Latin increscens, -entis, present participle of increscere. See Increase.]

1.
Increasing; growing; augmenting; swelling; enlarging.
Between the incresent and decrescent moon. — Tennyson
2.
(Heraldry) Increasing; on the increase; -- said of the moon represented as the new moon, with the points turned toward the dexter side.