IPA: /əˈseɪ.ər/
KK: /əˈseɪər/
A person who tests and analyzes metals to determine their composition and quality.
The assayer confirmed that the gold was of high purity.
Assayer → It is formed from "assay" (from Old French *assai*, meaning trial or test) and "-er" (meaning a person who). An assayer is a person who tests or analyzes the quality of a substance, typically metals or minerals.
Think of someone who is 'testing' ('assay') something — the '-er' indicates that this person is the one performing the test.