the indicator
91indicator — 1. In chemical analysis, a substance that changes color within a certain definite range of pH or oxidation potential, or in any way renders visible the completion of a chemical reaction; e.g., litmus, phenolsulfonphthalein. 2 …
92indicator — noun Date: 1666 1. one that indicates: as a. an index hand (as on a dial) ; pointer b. (1) gauge 2b, dial 4a (2) an instrument for automatically making a diagram that indicates the pressure in and volume of the working fluid of an engine… …
93indicator — in•di•ca•tor [[t]ˈɪn dɪˌkeɪ tər[/t]] n. 1) a person or thing that indicates 2) mac a pointing or directing device, as a pointer on the dial of a measuring instrument 3) mac an instrument that indicates the condition of a machine in operation 4)… …
94indicator species — 1) a fish species whose status provides information on the overall condition of the ecosystem and of other species in that ecosystem; fish that are sensitive to environmental conditions and which can therefore be used to assess environmental… …
95indicator — noun (C) 1 something that can be regarded as a sign which shows you in what way a situation is changing: All the main economic indicators suggest that trade is improving. 2 BrE one of the lights on a car that flash to show which way the car is… …
96indicator species — ▪ ecology organism often a microorganism or a plant that serves as a measure of the environmental conditions that exist in a given locale. For example, greasewood indicates saline soil; mosses (moss) often indicate acid soil. Tubifex worms… …
97indicator — A quantitative measure which reflects change in some aspect of the economy or of society such as mortality rates, measures of job segregation, or the retail price index. In the 1960s and 1970s, effort was invested in developing systems of social… …
98indicator organism — An organism whose presence indicates the condition of a substance or environment, for example, the potential presence of pathogens. Coliforms are used as indicators of fecal pollution …
99indicator — A measurable variable that gives information regarding performance or prospects. Examples of macroeconomic indicators are price, money supply, income, imports, and exports. Most organizations will use a range of financial and other indicators to… …
100indicator species — /ˈɪndəkeɪtə spisiz/ (say induhkaytuh speeseez) noun a species whose disappearance or disturbance gives a warning of a threat to an entire ecosystem, as the Australian bugle for the Monaro region …
