se.mes.ter HsI5mes7tE5, $sE5mes7tL n [C] one of the two or three periods into which a year is divided at a college or university, esp. in the US and Australia (尤指美国、澳大利亚的大学）一个学期 the first/second semester 第一/二学期 the spring/fall semester 春季/秋季学期 ☆ TERM