An example of crucial is information that a bomb is about to go off.
A crucial incision.
A crucial decision.
Origin of crucial
- From New Latin (īnstantia) crucis, (experīmentum) crucis crossroads (case), crossroads (experiment) from Latin crux cruc- cross Sense 2, French from Old French from Latin crux
From American Heritage Dictionary of the English Language, 5th Edition
- The meaning “decisive, critical” is extended from a logical term, Instantias Crucis, adopted by Francis Bacon in his influential Novum Organum (1620); the notion is of cross fingerboard signposts at forking roads, thus a requirement to choose. Specific quote is: