Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
indicator | Yes | No | No | No |
alpha-naphthol test | Yes | No | No | No |
indicator (noun) | alpha-naphthol test (noun) |
---|---|
a device for showing the operating condition of some system | biochemical indicator of the presence of carbohydrates in a solution; if carbohydrates are present a violet ring is formed by reaction with alpha-naphthol in the presence of sulfuric acid |
a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time | |
a signal for attracting attention | |
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction |