Where does “semicerebellectomy” come from?

semicerebellectomy (English) comes from English cerebellectomy, from English cerebellum, from Latin cerebellum, from Latin cerebrum, from Proto-Italic kerazrom, from Proto-Indo-European ḱerh₂-s-ro, from Proto-Indo-European ḱerh₂- — head, top; horn.

Ancestry of “semicerebellectomy”, step by step

semicerebellectomy traces back through two separate lines of ancestry.

via English cerebellectomy

StepLanguageWordMeaning
1EnglishcerebellectomyRemoval of all or part of the cerebellum
2EnglishcerebellumPart of the hindbrain in vertebrates. In humans...
3Latincerebellumbrain, little brain; seat of senses, intellect
4Latincerebrumbrain; skull
5Proto-Italickerazrombrain
6Proto-Indo-Europeanḱerh₂-s-ro
7Proto-Indo-Europeanḱerh₂-head, top; horn

via English semi

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially
Every word from Proto-Indo-European ḱerh₂-Every word from Proto-Indo-European ḱerh₂-s-roEvery word from Proto-Italic kerazrom