A force acting on a moving body, opposite in direction to the movement of the body, caused by the interaction of the body and the medium it moves through. The strength of drag usually depends on the velocity of the body. &diamf3; Drag caused by buildup of pressure in front of the moving body and a decrease in pressure behind the body is called pressure drag . It is an important factor in the design of aerodynamically efficient shapes for cars and airplanes. &diamf3; Drag caused by the viscosity of the medium as the molecules along the body's surface move through it is called skin drag or skin friction . It is an important factor in the design of efficient surface materials for cars, airplanes, boat hulls, skis, and swimsuits.
Find another word for puff. In this page you can discover 45 synonyms, antonyms, idiomatic expressions, and related words for puff, like: whiff, sudden gust, quick blast, commend, admire, congratulate, distend, enlarge, swell, exhale and pant.
He turned and stalked away, disappearing with a puff of cool breeze.
The soft puff of breath on her neck indicated he was still asleep.
The bird is boiled for the sake of the fat, which is used by the heavendoctors to puff on their bodies, and to anoint their lightning-rods."
She was an author, she explained with a puff of her ample bosom, and had just returned from Roswell, New Mexico, Mecca of the strange and alien.
While they were talking in undertones the crack of a shot sounded from the low ground by the pond, a puff of white smoke appeared, then another, and the sound of hundreds of seemingly merry French voices shouting together came up from the slope.