Where does “mucothermic” come from?

mucothermic (English) comes from English muco-, from Latin mūcus, from Proto-Italic moukos, from Proto-Indo-European mew-k- — slimy, slippery; slip, slime.

Ancestry of “mucothermic”, step by step

StepLanguageWordMeaning
1Englishmuco-mucus
2Latinmūcusmucus
3Proto-Italicmoukos—
4Proto-Indo-Europeanmew-k-slimy, slippery; slip, slime
Every word from Proto-Indo-European mew-k- →Every word from Proto-Italic moukos →Every word from Latin mūcus →