Definition of ad aperturam libri in English:

ad aperturam libri

adverb

  • With reference to an act of translation, a sermon, or other activity based on a text: extemporaneously, without preparation or recourse to reference materials.

Origin

Late 17th century. From post-classical Latin ad aperturam libri from classical Latin ad at + apertūram, accusative of apertūra + librī, genitive of liber book.

Pronunciation:

ad aperturam libri

/ad ˌapəˈtʃʊərəm ˌlɪbri/