noun plural
Usage: usually capitalized R&D
Etymology: Middle English rogacioun dayes
: the three days before Ascension Day observed by some Christians as days of special supplication
noun plural
Usage: usually capitalized R&D
Etymology: Middle English rogacioun dayes
: the three days before Ascension Day observed by some Christians as days of special supplication
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012