op·er·and 
(ŏpər-ənd)
(ŏpər-ənd)n.
A quantity on which a mathematical or logical operation is performed.
[From Latin operandum, neuter gerundive of operārī, to operate; see OPERATE.]
- 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
- Greene
- Greene
- greenery
- green-eyed
- green-eyed monster
- greenfield
- greenfinch
- greenfly