Where does “glandectomy” come from?

glandectomy (English) comes from English gland, from French glande, from Old French glandre, from Latin glāndula, from Latin -ulus, from Proto-Italic -olos, from Proto-Italic -elos, from Proto-Indo-European -e-lós — Forms agent nouns from verbal roots.

Ancestry of “glandectomy”, step by step

glandectomy traces back through two separate lines of ancestry.

via English gland

StepLanguageWordMeaning
1EnglishglandAn organ that synthesizes a substance, such as...
2Frenchglandegland; swollen lymph node; tumor, growth
3Old Frenchglandre
4Latinglāndulaa little acorn
5Latin-ulusUsed to form a diminutive of a noun, indicating...
6Proto-Italic-olos
7Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
8Proto-Indo-European-e-lós
9Proto-Indo-European-lósForms agent nouns from verbal roots

via English ectomy

StepLanguageWordMeaning
1EnglishectomyAny operation involving surgical excision or...
2English-ectomyExcision of; Surgical removal of
3Ancient Greekἐκτομήa cutting out; a segment
4Ancient Greekἐκτέμνωto cut out; to castrate; to divide, zone
5Ancient GreekτέμνωI cut, hew; I maim, wound; I butcher, sacrifice
6Proto-Indo-European-né-Forms mostly transitive imperfective verbs from...
Every word from Proto-Indo-European -lósEvery word from Latin -ulusEvery word from Latin glāndula