Hypertext Webster Gateway: "photometer"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Photometer \Pho*tom"e*ter\, n. [Photo- + -meter: cf. F.
photom[`e]tre.] (Physics)
An instrument for measuring the intensity of light, or, more
especially, for comparing the relative intensities of
different lights, or their relative illuminating power.
From WordNet (r) 1.7 (wn)
photometer
n 1: measuring instrument for measuring the luminous intensity of
a source by comparing it (visually or photoelectrically)
with a standard source
2: photographic equipment that measures the intensity of light
[syn: {light meter}, {exposure meter}]
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