(1):
(a.) Present; current.
(2):
(a.) Closely pressing or impending in respect to time; not deferred; immediate; without delay.
(3):
(adv.) Instantly.
(4):
(a.) A point in duration; a moment; a portion of time too short to be estimated; also, any particular moment.
(5):
(a.) A day of the present or current month; as, the sixth instant; - an elliptical expression equivalent to the sixth of the month instant, i. e., the current month. See Instant, a., 3.
(6):
(a.) Pressing; urgent; importunate; earnest.