gr.

1. Grain(s)
2. Gram(s) or gramme(s)
3. Grey
4. Gross

Gr.

Greek

GR

1. Georgius Rex (Latin) (see GRI)
2. Greece (IVR)

• oceanauts
• ocean basin
• ocean basins
• ocean-going
• ocean-greyhound
• ocean-greyhounds
• Oceanian
• oceanic
• oceanic crust
• oceanic islands
• oceanicity
• oceanid
• oceanides
• oceanids
• oceanographer
• oceanographers
• oceanographic
• oceanographical
• oceanographies
• oceanography
• oceanological
• oceanologies
• oceanologist
• oceanologists
• oceanology