The story
From oxa- + thiazinone.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A six-membered unsaturated heterocycle containing three carbon atoms (one of them as a carbonyl group) and one each of nitrogen, oxygen and sulfur Full definition →
From oxa- + thiazinone.
Etymology from Wiktionary, CC BY-SA 4.0.