What does "regnal" mean?

Of or pertaining to the reign of a monarch (or pope).

Regnal

adj

adj ·Rare ·Advanced level

Adjective

1
Of or pertaining to the reign of a monarch (or pope). not-comparable
2
Describing the year of a monarch's reign starting from the date of accession. not-comparable
3
Pertaining to a taxon at the rank of regnum (or kingdom). not-comparable

From Medieval Latin rēgnālis, from Latin rēgnum + -ālis.