autacoid /öˈtə-koid/ (medicine)

1. An internal secretion that excites or inhibits action in various tissues
2. A hormone or chalone

• greywacke-slate
• grey water
• grey-wether
• grey-wethers
• grey whale
• grey whales
• grey wolf
• grey wolves
• GRI
• gribble
• gribbles
• grice
• gricer
• gricers
• grices
• gricing
• gricings
• grid
• Grid
• gridder
• gridders
• griddle
• griddle-cake
• griddle-cakes
• griddle car