剑桥词典abbreviation for high-definition : used to describe a system for showing very clear pictures on a television or computer screen or for producing very clear sound 高清晰度（high-definition的縮寫） The series was shot entirely in HD. 這一系列全部用高清晰度技術拍攝。 HDTV sets 高清晰度電眡機 返回 HD