ac·ti·nom·e·ter ( k t -n m  -tr)n. Any of several radiometric instruments, such as a pyrheliometer, used chiefly for meteorological measurements of terrestrial and solar radiation. ac ti·no·metric (-n -m trk), acti·no·metri·cal adj.ac ti·nome·try n. |
actinometry
the measurement of the heating power of light in the violet and ultraviolet range. — actinometrist, n. — actinometric, actinometrical, adj.
See also: Light
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  actinometry - measuring the intensity of electromagnetic radiation (especially of the sun's rays)measurement, measuring, mensuration, measure - the act or process of assigning numbers to phenomena according to a rule; "the measurements were carefully done"; "his mental measurings proved remarkably accurate" |
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