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type of aircraft resembling an airplane but having at most a small auxiliary propulsion plant and usually no means of propulsion at all. The typical modern glider has very slender wings and a streamlined body.
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A triangular device on a rocket or spacecraft that consists of two flexible sections and resembles a kite; deployed to assist in guiding or landing a spacecraft or in recovering a launching rocket.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.