n.; pl. Interregnums [ L., fr. inter between + regnum dominion, reign. See Reign, and cf. Interreign. ] [ 1913 Webster ]

1. The time during which a throne is vacant between the death or abdication of a sovereign and the accession of his successor. [ 1913 Webster ]

2. Any period during which, for any cause, the executive branch of a government is suspended or interrupted. [ 1913 Webster ]