na-adjective
linguistic
Describes something related to linguistics or language study. Used as a na-adjective.
彼の研究は言語学的な観点から行われている。
His research is conducted from a linguistic perspective.
言語学 is the noun 'linguistics', while 言語学的 is the adjectival form meaning 'linguistic'.
Derived from 言語学 (linguistics) + 的 (adjectival suffix).