Definition of rogation in US English:

rogation

noun

  • usually as modifier (in the Christian Church) a solemn supplication consisting of the litany of the saints chanted on the three days before Ascension Day.

    ‘Rogation Week’

Origin

Late Middle English: from Latin rogatio(n-), from rogare ‘ask’.

Pronunciation

rogation

/rōˈɡāSHən//roʊˈɡeɪʃən/