the·o·re·ti·cian 
(thē′ər-ĭ-tĭshən, thîrĭ-)
(thē′ər-ĭ-tĭshən, thîrĭ-)n.
One who formulates, studies, or is expert in the theory of a science or an art.
- Greek Father
- Greek fire
- Greek Orthodox Church
- Greek Revival
- Greek salad
- Greeley
- Greeley
- green
- Green
- green about the gills
- green alga
- green around/about the gills
- green around the gills
- Greenaway
- greenback
- Green Bay
- green bean
- greenbelt
- Green Beret
- Greenberg
- greenbrier
- green card
- green chop
- green corn
- green dragon