- nepheligenous
- a. discharging smoke in clouds.♦ nephelognosy, n. observation of clouds.♦ nepheloid, a. cloudy.♦ nephelometer, n. instrument measuring cloudiness.♦ nephelorometer, n. instrument measuring clouds' direction and velocity.♦ nepheloscope, n. instrument demonstrating formation of clouds.
Dictionary of difficult words. 2015.