头显 Traditional form: 頭顯 Pinyin (reading): tóuxiǎn Definitions: HMD; head-mounted display (abbr. for 頭戴式顯示器/头戴式显示器 (tóudàishìxiǎnshìqì)) Characters: 头 - head; chief, boss; first, top 显 - clear, evident; prominent; to show Traditional characters: 頭 - head; chief, boss; first, top 顯 - clear, evident; prominent; to show