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“phototachometer”
phototachometer, phototachometric, phototachometrical
An apparatus for determining the velocity of light.
This entry is located in the following units:
meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre
(page 31)
photo-, phot-, -photic
(page 14)
tacho-, tach-, tachy-
(page 1)