lithophane

[ lith-uh-feyn ]
/ ˈlɪθ əˌfeɪn /

noun

a transparency made of thin porcelain or bone china having an intaglio design.

Origin of lithophane

First recorded in 1945–50; litho- + -phane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019