not prudent or wise; "very imprudent of her mother to encourage her in such silly romantic ideas"; "would be imprudent for a noneconomist to talk about the details of economic policy"- A.M.Schlesinger
including all or everything; "comprehensive coverage"; "a comprehensive history of the revolution"; "a comprehensive survey"; "a comprehensive education"
broad in scope; "a comprehensive survey of world affairs"
a mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan
heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings
air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water
fabric dyed with splotches of green and brown and black and tan; intended to make the wearer of a garment made of this fabric hard to distinguish from the background
disguise by camouflaging; exploit the natural surroundings to disguise something; "The troops camouflaged themselves before they went into enemy territory"