n. [ Gr. &unr_; wave -meter. ] An instrument for exhibiting and measuring wave motion;
n. [ Pyro- + -meter: cf. F. pyromètre. ]
☞ It is usually constructed so as to register the change which the heat to be measured produces in the length of some expansible substance, as a metallic rod, or in the intensity of a thermo-electric current. [ 1913 Webster ]
n. [ Pyro- + -meter: cf. F. pyromètre. ]
☞ It is usually constructed so as to register the change which the heat to be measured produces in the length of some expansible substance, as a metallic rod, or in the intensity of a thermo-electric current. [ 1913 Webster ]