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retardation
6 dictionary results for: Retardation
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
re·tar·da·tion 
[ree-tahr-dey-shuhn] Pronunciation Key
—Related forms
[ree-tahr-dey-shuhn] Pronunciation Key –noun
| 1. | the act of retarding or state of being retarded. |
| 2. | something that retards; hindrance. |
| 3. | slowness or limitation in intellectual understanding and awareness, emotional development, academic progress, etc. |
| 4. | Music. a form of suspension that is resolved upward. |
Also, re·tard·ment
[ri-tahrd-muhnt] Pronunciation Key.
[ri-tahrd-muhnt] Pronunciation Key.[Origin: 1400–50; late ME retardacioun < L retardātiōn- (s. of retardātiō), equiv. to retardāt(us) (see retard, -ate1) + -iōn- -ion]
] —Related forms
re·tard·a·tive
[ri-tahr-duh-tiv] Pronunciation Key, re·tard·a·to·ry
[ri-tahr-duh-tawr-ee, -tohr-ee] Pronunciation Key, adjective
[ri-tahr-duh-tiv] Pronunciation Key, re·tard·a·to·ry
[ri-tahr-duh-tawr-ee, -tohr-ee] Pronunciation Key, adjective
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
American Heritage Dictionary - Cite This Source - Share This
| re·tar·da·tion
(rē'tär-dā'shən) Pronunciation Key
n.
|
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Online Etymology Dictionary - Cite This Source - Share This
retardation
retardation
1426, "fact or action of making slower in movement or time," from L. retardationem, from retardare "to make slow, delay, keep back, hinder," from re-, intensive prefix, + tardare "to slow" (see tardy). Retarded "mentally slow" first recorded 1895. Retard (v.) first recorded 1489, from O.Fr. retarder (13c.); offensive noun meaning "stupid person" (with accent on first syllable) is from 1960s slang.
Online Etymology Dictionary, © 2001 Douglas Harper
WordNet - Cite This Source - Share This
| retardation | |
noun | |
| 1. | a decrease in rate of change; "the deceleration of the arms race" [syn: deceleration] [ant: acceleration] |
| 2. | the extent to which something is delayed or held back |
| 3. | any agent that retards or delays or hinders; "flame-retardant" [syn: retardant] |
| 4. | lack of normal development of intellectual capacities |
| 5. | the act of slowing down or falling behind [syn: slowdown] |
WordNet® 3.0, © 2006 by Princeton University.
American Heritage Stedman's Medical Dictionary - Cite This Source - Share This
retardation re·tar·da·tion (rē'tär-dā'shən)
n.
- The condition of being relatively slow in mental, emotional, or physical development.
- The extent to which something is held back or delayed.
- Mental retardation.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Webster's Revised Unabridged Dictionary - Cite This Source - Share This
Retardation
Re`tar*da"tion\, n. [L. retardatio: cf. F. retardation.]1. The act of retarding; hindrance; the act of delaying; as, the retardation of the motion of a ship; -- opposed to acceleration. The retardations of our fluent motion. --De Quinsey. 2. That which retards; an obstacle; an obstruction. Hills, sloughs, and other terrestrial retardations. --Sir W. Scott. 3. (Mus.) The keeping back of an approaching consonant chord by prolonging one or more tones of a previous chord into the intermediate chord which follows; -- differing from suspension by resolving upwards instead of downwards. 4. The extent to which anything is retarded; the amount of retarding or delay. Retardation of the tide. (a) The lunitidal interval, or the hour angle of the moon at the time of high tide any port; the interval between the transit of the moon and the time of high tide next following. (b) The age of the tide; the retard of the tide. See under Retard, n.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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