الواصلة
proof of con·ceptالتركية النطق
pruf ıv känseptالنطق
/ˈpro͞of əv ˈkänsept/ /ˈpruːf əv ˈkɑːnsɛpt/
علم أصول الكلمات
[ 'prüf ] (noun.) 13th century. Middle English, alteration of preove, from Old French preuve, from Late Latin proba, from Latin probare to prove; more at PROVE.