sfə̇ˈräməd.ə(r) noun
Etymology: International Scientific Vocabulary sphaer- + -meter; originally formed as French sphéromètre
: an instrument for measuring the curvature of a spherical surface
sfə̇ˈräməd.ə(r) noun
Etymology: International Scientific Vocabulary sphaer- + -meter; originally formed as French sphéromètre
: an instrument for measuring the curvature of a spherical surface
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012