Where does “дієтологиня” come from?

дієтологиня (Ukrainian) comes from Ukrainian дієто́лог, from Ukrainian -лог, from Ancient Greek -λόγος, from Ancient Greek -ός, from Proto-Hellenic *-os, from Proto-Indo-European -ós — Creates agent nouns from verb stems, denoting...

Ancestry of “дієтологиня”, step by step

StepLanguageWordMeaning
1Ukrainianдієто́логdietitian, dietetician, dietologist
2Ukrainian-логlogist used to denote practitioners of disciplines with names bearing the suffix
3Ancient Greek-λόγοςword, speech; one who speaks; word, knowledge,...
4Ancient Greek-όςForms agentive or patientive adjectives and nouns from the o-grade of a verbal root
5Proto-Hellenic*-os
6Proto-Indo-European-ósCreates agent nouns from verb stems, denoting...
Every word from Proto-Indo-European -ósEvery word from Ancient Greek -όςEvery word from Ancient Greek -λόγος