Definition of regalian in US English:

regalian

adjective

formal
  • Belonging or relating to a monarch; regal.

    ‘regalian rights’
    • ‘Even before his death in 911, Æthelfleda is recorded as exercising regalian power in the province in the ‘Mercian Register’, a fragment of a Mercian chronicle incorporated into some versions of the Anglo-Saxon Chronicle.’
    • ‘The relentless search for new revenues during the Dutch war had led him in 1673 to seek an extension of the regalian rights whereby the crown enjoyed the revenues of vacant episcopal sees.’
    • ‘Under the regalian doctrine, forestland became public domain.’

Origin

Early 19th century: from French régalien, from Latin regalis ‘regal’.

Pronunciation

regalian

/riˈɡālyən/