|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a stew of meat, vegetables, potatoes, etc.|
|hydrazine (hī'drə-zēn', -zĭn) Pronunciation Key
A colorless, fuming, corrosive liquid with an odor like ammonia that is a powerful reducing agent. It can be combined with organic compounds to form jet and rocket fuels and is also used to make explosives, fungicides, medicines, and photographic chemicals. Chemical formula: N2H4.