IPA: /ˌpaɪrəˈmɛtrɪk/
KK: /paɪrəˈmɛtrɪk/
Relating to a device that measures high temperatures or the science of measuring temperature.
The pyrometric measurements were crucial for ensuring the furnace operated at the correct temperature.
Pyrometric → It is formed from "pyro-" (from Greek "pur", meaning fire) and "metric" (from Greek "metron", meaning measure). The word refers to the measurement of heat or temperature related to fire.
Think of 'fire' ('pyro-') being measured ('metric') — that's what pyrometric means.