(obsolete) For a moment; briefly.

(idiomatic) A memorable moment or event, one which would make a poignant greeting card.

plural of four-momentum

The moment when a country or a society realizes that it needs to catch up with apparent technological and scientific developments made by some other country or countries by increasing its investment into education, innovative research and development, etc.

(obsolete) Lasting only for a moment; brief. / (obsolete) important; momentous / (obsolete, engineering) Of or relating to moment or momentum.

(US politics, informal) A situation where a politician says something controversial that harms their chances of success.

plural of momanager

At this time

A moment during legal or judicial proceedings when evidence or other information, usually unknown to most present, is introduced into the record in a manner seen as determinative of the outcome of the proceedings regardless of whatever else occurs.

(mathematics) A function derived from the probability distribution of a random variable.