li·thog·ra·phy
noun/lɪˈθɒɡrəfi/
/lɪˈθɑːɡrəfi/
(also informal litho
[uncountable]/ˈlaɪθəʊ/
/ˈlaɪθəʊ/
)- the process of printing from a smooth surface, for example a metal plate, that has been specially prepared so that ink (= coloured liquid) only sticks to the design to be printed
平版印刷术 Word Originearly 19th cent.: from German Lithographie (from litho- ‘relating to stone’ + -graphy).