A technique of widescreen cinematography in which 70 mm film is projected through a fisheye lens on to a hemispherical screen.
1970s: from omni- 'everywhere' + maximum.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。