'thiazole-containing' originates from English, combining the chemical name 'thiazole' (from New Latin/chemical nomenclature, where Greek 'thio-' meant 'sulfur' combined with the azole class name for five-membered nitrogen-containing heterocycles) and the English present participle 'containing' (from Latin 'continēre').

'thiazole' developed in modern chemical nomenclature from New Latin 'thiazolum' and entered English as 'thiazole'; 'thiazole-containing' was formed in modern chemical English by attaching the participle 'containing' to denote a compound that includes a thiazole ring.

Initially, 'thiazole' named the specific heterocyclic ring; over time the compound form 'thiazole-containing' came to be used adjectivally to describe molecules that include that ring.