Other forms: semesters
A semester is one half of the school or university year. You choose your courses at the start of it and sit the exams at the end, and then it happens again.
There are two in a year, each four or five months long, and they have names: the fall semester and the spring semester in America, the autumn and spring semesters elsewhere. This is where British and American English part company — British universities mostly run three terms, so a student in Leeds says last term where a student in Boston says last semester. The words you meet around it are semester abroad, semester break, and end-of-semester exams. If you talk about a semester in a British school, you will be understood and gently corrected.
1nounsemesterOne of the two main periods into which a school or university year is divided.
“She is taking four courses this semester.”
semester is a division of the academic year.
Also accepted in games: term
Semester came into English from German Semester, from New Latin sēmestris, "lasting six months", built from sex, "six", and mēnsis, "month". Half a year is what the word promises, which is generous — most semesters run out of teaching well before month six.
New Latin
sēmestris — lasting six months
German
Semester
English, today
semester
Built from
From German Semester, from New Latin sēmestris (“lasting six months”), from sex (“six”) + mēnsis (“month”).
Etymology from Wiktionary, CC BY-SA