Where does “pyrosignal” come from?

pyrosignal (English) comes from English signal, from Old French segnal, from Medieval Latin signale, from Latin signālis, from Latin signum, from Proto-Italic seknom, from Proto-Indo-European sek- — to cut, cut off, sever.

pyrosignal (English): A signal produced by a thermal-imaging camera,...

Definitions

  1. A signal produced by a thermal-imaging camera,...

Ancestry of “pyrosignal”, step by step

pyrosignal traces back through two separate lines of ancestry.

via English signal

StepLanguageWordMeaning
1EnglishsignalA sequence of states representing an encoded...
2Old Frenchsegnalemblem; badge; signature; distinguishing mark...
3Medieval Latinsignalesignal
4Latinsignālis
5Latinsignumvisible indication: sign, mark, signal; seal,...
6Proto-Italicseknomsign
7Proto-Indo-Europeansek-to cut, cut off, sever

via English pyro

StepLanguageWordMeaning
1Englishpyroa pyromaniac; pyrocellulose; pyrotechnician
2Ancient Greekπῦρa fire; lightning; a fever
3Proto-Indo-Europeanpéh₂wr̥bonfire; spelt
Every word from Proto-Indo-European sek-Every word from Proto-Italic seknomEvery word from Latin signum