/ˈsɒlstɪs ||; ˈsɑlstɪs/noun [C] either of the two times of the year at which the sun reaches its highest or lowest point in the sky at midday, marked by the longest and shortest days 至点（指太阳正午时在天上抵达的最高点或最低点，每年各一次，标志着这一天白天最长或最短）: the summer/winter solstice 夏至；冬至 ☞Look at equinox. 参看equinox。 ☞picture at season 见season插图