plural of ordinal indicator

A sign adjacent to a numeral denoting that it is an ordinal number, rather than a cardinal number.

(aviation, UK, military) An instrument that displays attitude of an aircraft in pitch and roll.

(chemistry) An acid-base indicator.

(aviation) An instrument that displays an aircraft's current airspeed.

(chemistry) any substance used to classify another, often by changing colour

plural of airspeed indicator

plural of indicator function

(chemistry) A substance that exists in an oxidized and reduced forms, these forms having different colours, changing colour at a specific redox potential

plural of redox indicator