etymology

US /ˌet̬.ɪˈmɑː.lə.dʒi/
UK /ˌet̬.ɪˈmɑː.lə.dʒi/
"etymology" picture
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etimologia, origem das palavras

the study of the origin and history of words and their meanings

:
The etymology of the word 'hello' is quite interesting.
A etimologia da palavra 'olá' é bastante interessante.
She specialized in the etymology of ancient Greek words.
Ela se especializou na etimologia de palavras gregas antigas.