héliogravure

== French == === Etymology === From hélio- +‎ gravure. === Pronunciation === (mute h) IPA(key): /e.ljɔ.ɡʁa.vyʁ/ === Noun === héliogravure f (plural héliogravures) heliogravure, rotogravure === Further reading === “héliogravure”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012