Definify.com
Webster 1913 Edition
Momentous
Mo-men′tous
,Adj.
[Cf. L.
momentosus
rapid, momentary.] Of moment or consequence; very important; weighty;
– as, a
momentous
decision; momentous
affairs. Mo-men′tous-ly
, adv.
Mo-men′tous-ness
, Noun.
Webster 1828 Edition
Momentous
MOMENT'OUS
,Adj.