The Collaborative International Dictionary of English. 2000.
astrophotometry — astrophotometric /as troh foh teuh me trik/, astrophotometrical, adj. astrophotometrically, adv. /as troh foh tom i tree/, n. the measurement of the intensity of light of celestial objects. [ASTRO + PHOTOMETRY] * * * … Universalium
Crab (unit) — A Crab is a standard astrophotometrical unit for measurement of the intensity of Astrophysical X ray sources.[1][2][3][4] One Crab is defined as the intensity of the Crab Nebula at the corresponding X ray energy. The name is derived from the Crab … Wikipedia
astrophotometry — astrophotometric /as troh foh teuh me trik/, astrophotometrical, adj. astrophotometrically, adv. /as troh foh tom i tree/, n. the measurement of the intensity of light of celestial objects. [ASTRO + PHOTOMETRY] … Useful english dictionary
