solstice

n either of the two times of the year at which the sun is furthest North or South of the equator 至日; 冬至或夏至: summer solstice, ie about 21 June in the Northern hemisphere 夏至 * winter solstice, ie about 22 December in the Northern hemisphere 冬至. Cf 参看 equinox.

solicitous, solicitously, solicitude, solid, solid-state, solidarity, solidification, solidify, solidity, solidly, soliloquize, soliloquise, soliloquy, solipsism, solitaire, solitarily, solitary, solitary confinement, solitude, solo, soloist, solubility, soluble, solution, solution to, solvable, solve, solvency, solvent, solver, somatic, somber, sombre (US somber), sombrely, sombreness, sombrero, some, somebody, someday, somehow, someone,