Definition of pièce justificative in US English:

pièce justificative

noun

  • A document serving as proof of an allegation; a justification of an assertion.

Origin

Late 18th century; earliest use found in Hannah More (1745–1833), writer and philanthropist. From French pièce justificative from pièce + justificative, feminine of justificatif.

Pronunciation

pièce justificative

/piːˌɛs ˌʒuːstɪfɪkəˈtiːv/