The term COLL. CLASS is a combination of two words, ENG and SEM, which are abbreviations for English and Semester, respectively. ENG stands for English, which is a language spoken by many people around the world. SEM stands for Semester, which is a period of time in which students attend classes at a college or university. Together, ENG and SEM form the term COLL. CLASS, which refers to a college or university class that is taught in English during a semester.