laser

laser
/ˈleɪzə(r); `lezɚ/ n
device that generates an intense and highly controlled beam of light 激光器
    [attrib 作定语]
laser beams, radiation, physics 激光束、 激光辐射、 激光物理学
    a laser-guided missile 激光制导导弹.

牛津英汉双解词典