Look up indicator in Wiktionary, the free dictionary. Indicator may refer to: Environmental indicator of environmental health (pressures, conditions and...

A universal indicator is a pH indicator made of a solution of several compounds that exhibit various smooth colour changes over a wide range pH values...

A performance indicator or key performance indicator (KPI) is a type of performance measurement. KPIs evaluate the success of an organization or of a particular...

The attitude indicator (AI), formerly known as the gyro horizon or artificial horizon, is a flight instrument that informs the pilot of the aircraft orientation...

In written languages, an ordinal indicator is a character, or group of characters, following a numeral denoting that it is an ordinal number, rather than...

A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined...

Look up indicator lamp in Wiktionary, the free dictionary. An indicator lamp (or indicator light) is an illuminated device that is intended to visually...

In mathematics, an indicator function or a characteristic function of a subset of a set is a function that maps elements of the subset to one, and all...

The Myers–Briggs Type Indicator (MBTI) is a pseudoscientific self-report questionnaire that claims to indicate differing "psychological types" (often...

A redox indicator (also called an oxidation-reduction indicator) is an indicator which undergoes a definite color change at a specific electrode potential...