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C2
IPA
/niʔruʔtteʔ saːstɑː/
GD
nirutte sasta

និរុត្តិសាស្ត្រ Meaning in English

Etymology
Philology
Dialectology

Definitions

US philology; dialectology, etymology
Headley
US Noun etymology, the study of the origins and histories of words
Wiktionary