"Ordinary" comes from the same root as our word "ordinal", and in this sense means "the counted weeks". In the Catholic Church and in some Protestant traditions, these are the common weeks which do not belong to a proper season. In Latin, these seasons are called the weeks , or "through the year".
"ordinary" comes from the same root as our word "ordinal" and in this sense means "the counted weeks" in the catholic church and in some protestant traditions these are the common weeks which do not belong to a proper season in latin these seasons are called the weeks  or "through the year"