assay
UK: əˈseɪ | US: əˈseɪ
n. 1. The testing of a metal or ore to determine its ingredients and quality.
n. 2. A procedure for measuring the biochemical or immunological activity of a sample.
vt. 1. To examine or analyze (a substance) to determine its composition.
vt. 2. To attempt or evaluate (something challenging).
The word "assay" traces back to the Latin "exagium," meaning "weighing" or "testing," which evolved into Old French "essai" (trial). The prefix "a-" (from Latin "ad-") was added, signifying direction or purpose. Over time, "assay" came to specifically denote the testing of metals or substances, retaining its core idea of evaluation.
The geologist will assay the ore sample to determine its gold content.
Laboratory technicians assay blood samples for antibodies.
The new method was assayed in multiple clinical trials.
His courage was assayed during the expedition.
The assay revealed impurities in the alloy.