heliotypography

English

Etymology

helio- +‎ typography

Noun

heliotypography (uncountable)

  1. (historical) A technique for producing of a print of sunspots from a photographic negative using a typographical press.
This article is issued from Wiktionary. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.