The story
From the brand name of a technical pen introduced by Rotring in the 1950s, presumably rapid + -o- + -graph.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A technical pen. Full definition →
From the brand name of a technical pen introduced by Rotring in the 1950s, presumably rapid + -o- + -graph.
Etymology from Wiktionary, CC BY-SA 4.0.