perfective aspect
Linguistics term referring to a grammatical aspect that presents an action as a completed whole, often contrasted with imperfective aspect.
Russian verbs have a distinction between perfective and imperfective aspect.
Japanese ～てしまう can express a meaning close to perfective aspect.
Also translates as 'perfective aspect' but may be used in slightly different theoretical frameworks; 完結相 is more common in some linguistic traditions.
Compound of 完結 (completion) and 相 (aspect, phase), a calque from Western linguistic terminology.