Definition of ad clerum in English:

ad clerum

adverb

  • With reference to a sermon by or letter from an ecclesiastical authority: (addressed) to the clergy.

Origin

Mid 16th century; earliest use found in Nicholas Ridley (c1502–1555), bishop of London and protestant martyr. From post-classical Latin ad clerum from classical Latin ad to + post-classical Latin clerum, accusative of clerus the clergy.

Pronunciation:

ad clerum

/ˌad ˈklɛrəm/