T1R1O1P3I1C3S1
11 points
TROPICS is validvalid
TROPIC, either of two circles of the celestial sphere on each side of the equator [n]
TROPIC, either of two circles of the celestial sphere on each side of the equator [n]
TROPIC, either of two circles of the celestial sphere on each side of the equator [n]
TROPIC, either of two circles of the celestial sphere on each side of the equator [n]