from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a year with an extra day, a leap year
from the GNU version of the Collaborative International Dictionary of English
- n. See Bissextile.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. in the Gregorian calendar: any year divisible by 4 except centenary years divisible by 400
From bissextile + year. (Wiktionary)
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