I. noun suffix Etymology: Middle English, from Anglo-French -ur, -our, -eour & Latin ~; Anglo-French -ur, -our, from Latin ~; Anglo-French -eour, from Latin -ator, from -a-, verb stem + -tor, agent suffix; akin to Greek -tōr, agent suffix, Sanskrit -tā one that does a (specified) thing , II. noun suffix Etymology: Middle English, from Anglo-French -ur, ~ from Latin ~ condition ; activity
-OR
Meaning of -OR in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012