assay
0 antonyms and opposites of assay, grouped by meaning.
Noun — A test that determines the composition or purity of a substance, or the potency of a drug or biological sample.
Etymology
From Old French "assai," a trial or test, related to "essai" (attempt) — the same root that gives English "essay".
Full origin of assay →Frequently asked questions
What does assay mean?
To test a substance to find out what it contains or how pure it is — commonly used of ores, metals and, in medicine and biology, of samples and drugs.
What is the difference between assay and essay?
They share a root meaning "attempt". An assay is a test of composition or purity; an essay is a piece of writing. Assay is stressed on the second syllable: a-SAY.