That has fleeting significance; having heightened relevance or importance in the short-term.

plural of big-lipped alligator moment

(fandom slang) A notably unusual, tangential scene in a movie or similar work of fiction, which occurs without setup and does not affect the story afterward.

Synonym of not a minute too soon

(chiefly politics, journalism) A moment when a public figure is booed in public; (by extension) a moment when a person or régime previously considered unassailable suddenly looks vulnerable; the outbreak of a revolution

Synonym of man of the hour

(idiomatic) A short period of time, typically anywhere from several seconds to several minutes or more. / Used other than figuratively or idiomatically: see one, moment.

(idiomatic) Stop; wait; hold on. Used to interrupt speech or proceedings so that one can make a comment or query.

A Janus kinase inhibitor being developed as a drug to treat myelofibrosis.

(slang, humorous) An instance of a video gamer doing something offensive, such as saying a racial slur, in a moment of frustration or carelessness.