spot test


noun

an informal test run without elaborate preparation in order to obtain an immediate sample response.
Chemistry. a test for the identification of an element or compound by means of a reagent that produces a characteristic color change or precipitate.

Compare spot plate.

Origin of spot test

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019