| 单词 | ball-and-socket joint |
| 释义 | ball-and-socket joint[ bawl-uhn -sok-it ] / ˈbɔl ən ˈsɒk ɪt / nounAlso called enarthrosis. Anatomy, Zoology. a joint in which the rounded end of one bone fits into a cuplike end of the other bone, allowing for relatively free rotary motion, as at the hip or shoulder. Also called ball joint. a similar joint between rods, links, pipes, etc., consisting of a ball-like termination on one part held within a concave, spherical socket on the other. Origin of ball-and-socket jointFirst recorded in 1660–70 Words nearby ball-and-socket jointball ammunition, Ballance, ball and chain, ball-and-claw foot, ball and ring, ball-and-socket joint, Ballantyne, Ballarat, Ballard, Ballardian, ballas Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for ball-and-socket jointball-and-socket joint ball jointnouna coupling between two rods, tubes, etc, that consists of a spherical part fitting into a spherical socket, allowing free movement within a specific conical volume Also called: multiaxial joint anatomy a bony joint, such as the hip joint, in which a rounded head fits into a rounded cavity, allowing a wide range of movement Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for ball-and-socket jointball-and-socket joint n.A multiaxial joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint.cotyloid joint enarthrosis The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for ball-and-socket jointball-and-socket joint [ bôl′ən-sŏk′ĭt ] A joint, such as the shoulder or hip joint, in which a spherical knob or knoblike part of one bone fits into a cavity or socket of another, so that some degree of rotary motion is possible in every direction. A mechanical device consisting of a spherical knob at the end of a shaft that fits securely into a socket. Ball-and-socket joints are used to connect parts of a machine that require rotary movement in nearly all directions. Ball-and-socket joints allow the front wheels of a car to be turned by the steering mechanism. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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