Word: 课时 (kèshí) Traditional: 課時 课时 dictionary entry kèshí class; period Full dictionary entry for 课时 Example sentences using 课时 2 sentences, showing page 1 of 1. 今天上午有三个课时。 Jīntiān shàngwǔ yǒu sān gè kèshí. There are three periods this morning. 每个课时是四十五分钟。 Měige kèshí shì sì shíwǔ fēnzhōng. Each period is forty-five minutes long.