indicator
/ˈɪn.dɪˌkeɪ.tə(ɹ)/ noun
Forms indicators
- noun A pointer or index that indicates something.
- noun A meter or gauge.
- noun The needle or dial on such a meter.
- noun (chemistry) Any of many substances, such as litmus, used to indicate the concentration of a substance, or the degree of a reaction.
- noun (ecology) A plant or animal whose presence is indicative of some specific environment.
- noun (economics) A measure, such as unemployment rate, which can be used to predict economic trends.
- noun (UK, Australia, New Zealand, Ireland, South Africa, automotive) A turn signal; each of the flashing lights on each side of a vehicle which indicate a turn is being made to left or right, or a lane change etc.
- noun A bird, the honeyguide.
Synonyms
blinker directional directional signal direction indicator trafficator turn indicator turn signal index index number indicant
Etymology
From Late Latin indicātor (“one who points out”), from Latin indicō (“point out”). By surface analysis, indicate + -or; see indicate.
Webster’s 1913
- noun One who, or that which, shows or points out; as, a fare indicator in a street car.
- noun A pressure gauge; a water gauge, as for a steam boiler; an apparatus or instrument for showing the working of a machine or moving part; as: (a) (Steam Engine) An instrument which draws a diagram showing the varying pressure in the cylinder of an engine or pump at every point of the stroke. It consists of a small cylinder communicating with the engine cylinder and fitted with a piston which the varying pressure drives upward more or less against the resistance of a spring. A lever imparts motion to a pencil which traces the diagram on a card wrapped around a vertical drum which is turned back a
Etymology [L.: cf. F. indicateur.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “indicator”, CC BY-SA 4.0. Details