se ‧ mes ‧ ter /səˈmestə, sɪˈmestə $ -ər/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: German ; Origin: Latin semestris 'half-yearly' , from sex 'six' + mensis 'month' ]
one of the two periods of time that a year at high schools and universities is divided into, especially in the US:
the fall semester
⇨ ↑ term 1 (5), ↑ quarter 1 (8)