semester-long

the compound adjective "semester-long" is a modern english formation that transparently combines two temporal elements. the first element, "semester," originates from the latin "semestris," a term for a six-month period, which itself derives from "sex" (six) and "mensis" (month). the second element, "long," has ancient germanic roots, from the old english "lang," meaning 'having great linear extent or duration.' the compound's logic is straightforwardly descriptive, joining a specific, institutional unit of academic time with a general adjective of duration to create a term meaning 'lasting the entire semester.' this pattern is productive in english, analogous to formations like "week-long" or "year-long."

Structure: semester (academic term) + long (duration) - semester: from latin 'semestris', meaning 'of six months', from 'sex' (six) + 'mensis' (month). functions as a noun root specifying a period of time. - long: from old english 'lang, long', of germanic origin, related to dutch 'lang' and german 'lang'. functions as an adjective meaning 'having considerable duration'.