adjective Etymology: Latin Ordovices, ancient people in northern Wales Date: 1879 of, relating to, or being the period between the Cambrian and the Silurian or the corresponding system of rocks, ~ noun
ORDOVICIAN
Meaning of ORDOVICIAN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012