pa

Reading level: hard

Estimated CEFR level: B2 — Upper-Intermediate

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun an informal term for a father; probably derived from baby talk
  2. noun a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
  3. noun a unit of pressure equal to one newton per square meter

Etymology

Clipping of papa.

In classic literature

Synonyms

dad, dada, daddy, papa, pappa, pop

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