Millifortnight

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A period of time equal to one thousandth of a fortnight, which is exactly 1209.6 seconds, or about 20 minutes. humorous
"Holonym: fortnight"

Etymology

From milli- + fortnight.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.