Rā'di-ŏm'e-ter, n.
n. [Fr. radiomètre, from Lat. radius, radius, and metrum, Gr. μέτρον, measure.] The fore staff, an instrument formerly used for taking the altitudes of celestial bodies. Hutton.
n. [Fr. radiomètre, from Lat. radius, radius, and metrum, Gr. μέτρον, measure.] The fore staff, an instrument formerly used for taking the altitudes of celestial bodies. Hutton.