tropical year Definition

astronomical year, equinoctial year, solar year, sidereal year, sidereal day, sidereal time, cosmic time, solar day, anomalistic year, lunar year, lunistice, lunar month, equinoctial point, solar calendar, mean solar day, synodic month, midnight sun, tellurion, old moon, inferior planet, evection, celestial point, apocynthion, solstice, acronycal, julian calendar, circumjovial, superior planet, armil, equinoctial circle, calendar month, superlunar, apolune, acronycally, interequinoctial, lunitidal, equidiurnal, moonward, lunary, moon, lunicurrent, inner planet, vernal equinox, international date line, antiscian, equinox, regrede, equinoctially, ecliptic, upsun, geoselenic, proemptosis, sidereal, major planet, autumnal equinox, spring equinox, total eclipse, interlunar, celestial equator, star chart, almucantar, isotherombrose, apastron, sabianism, neomenia, civil time, lunisolar calendar, sidereous, cometarium, lunar, antichthon, subsolary, solar telescope, isocryme, absolute magnitude, tropic of cancer, intersidereal, summer solstice, tropic of capricorn, giant planet, translunary, apojove, interlunation, proper motion, antapex, moonish, binary system, geocyclic, siderostat, isothere, sun, ephemeris time, solar constant, right ascension, heliometer, minor planet, celestial sphere, uranoscopy, parhelic circle, trioctile,