| Decade (n.) A group or division of ten; esp., a period of ten years; a decennium; as, a decade of years or days; a decade of soldiers; the second decade of Livy. Thesaurus Entries Big Dick, Decalogue, Ten Commandments, X, abundant year, academic year, annum, bissextile year, calendar month, calendar year, century, common year, day, decagon, decagram, decahedron, decaliter, decameter, decare, decastere, decastyle, decasyllable, decemvir, decemvirate, decennary, decennium, decigram, deciliter, decimeter, decurion, defective year, fiscal year, fortnight, hour, leap year, lunar month, lunar year, lunation, luster, lustrum, man-hour, microsecond, millennium, millisecond, minute, moment, month, moon, quarter, quinquennium, regular year, second, semester, session, sidereal year, solar year, sun, ten, tenner, term, trimester, twelvemonth, week, weekday, year |