[quarter hour] n (1883) 1: any of the quarter points of an hour
2: fifteen minutes
3: a unit of academic credit representing an hour of class (as lecture class) or three hours of laboratory work each week for an academic quarter
[quarter hour] n (1883) 1: any of the quarter points of an hour
2: fifteen minutes
3: a unit of academic credit representing an hour of class (as lecture class) or three hours of laboratory work each week for an academic quarter
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012