K-T BOUNDARY


Meaning of K-T BOUNDARY in English

noun Etymology: K (alternative for C as abbreviation for Cretaceous) + Tertiary Date: 1983 the transition between the Cretaceous and Tertiary periods of geologic time characterized by a mass extinction of many forms of life including the dinosaurs

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.