Index of English words, starting with "py"

(1) - Pyrometer (n.) An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.
(2) - Pyrometer (n.) An instrument used for measuring the expansion of solid bodies by heat.

(1) - Pyrometry (n.) The art of measuring degrees of heat, or the expansion of bodies by heat.

(1) - Pyromorphite (n.) Native lead phosphate with lead chloride, occurring in bright green and brown hexagonal crystals and also massive; -- so called because a fused globule crystallizes in cooling.