vernalization Syllabification: (ver·nal·i·za·tion)Pronunciation: /ˌvərnl-əˈzāSHən/Definition of vernalization noun the cooling of seed during germination in order to accelerate flowering when it is planted. Derivatives vernalizePronunciation: /ˈvərnlˌīz/ verb Origin: 1930s: translation of Russian yarovizatsiyavernalization in other Oxford dictionaries Definition of vernalization in the British & World English dictionary