crucial

English dictionary entry

Meanings

adj
  1. Essential or decisive for determining the outcome or future of something; extremely important; vital.
  2. Cruciform or cruciate; cross-shaped.
  3. Very good; excellent; particularly applied to reggae music.

Pronunciation

/ˈkɹuː.ʃəl/ en-au-crucial.ogg

Word forms

crucial more crucial most crucial

Etymology

1706, from French crucial, a medical term for ligaments of the knee (which cross each other), from Latin crux, crucis (“cross”) (English crux), from the Proto-Indo-European *(s)ker- (“to turn, to bend”). 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.

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