Tra từ assay-mark - Từ điển Oxford Learners Wordfinder Dictionary

Từ điển Oxford Learners Wordfinder Dictionary

assay-mark

noun

a mark on an article of trade to indicate its origin and authenticity
• Syn:
authentication, hallmark
• Derivationally related forms:
authenticate (for: authentication)
• Hypernyms:
marker, marking, mark