symmetric
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trɪ adjective
1.
characterized by or exhibiting symmetry; well-proportioned, as a body or whole; regular in form or arrangement of corresponding parts.
2.
Geometry.
a.
noting two points in a plane such that the line segment joining the points is bisected by an axis: Points (1, 1) and (1, −1) are symmetrical with respect to the x-axis.
b.
noting a set consisting of pairs of points having this relation with respect to the same axis.
c.
noting two points in a plane such that the line segment joining the points is bisected by a point or center: The points (1, 1) and (−1, −1) are symmetrical with respect to (0, 0).
d.
noting a set consisting of pairs of points having this relation with respect to the same center.
3.
Often, symmetric. Mathematics.
a.
noting a square matrix that is equal to its transpose.
b.
noting a dyad or dyadic that is equal to its conjugate.
c.
noting a relation in which one element in relation to a second implies the second in relation to the first.
4.
Botany.
a.
divisible into two similar parts by more than one plane passing through the center; actinomorphic.
b.
(of a flower) having the same number of parts in each whorl.
5.
Chemistry.
a.
having a structure that exhibits a regular repeated pattern of the component parts.
b.
noting a benzene derivative in which three substitutions have occurred at alternate carbon atoms.
Also, sym·met·ric.
Related forms
sym·met·ri·cal·ly, adverb
sym·met·ri·cal·ness, noun
non·sym·met·ri·cal, adjective
un·sym·met·ri·cal, adjective
un·sym·met·ri·cal·ly, adverb
Synonyms
1. balanced, orderly, regular, congruent.
1. balanced, orderly, regular, congruent.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
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Link To symmetric
00:10
Symmetric
is always a great word to know.
So is ninnyhammer. Does it mean:
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a fool or simpleton; ninny. |
Collins
World English Dictionary
symmetric (sɪˈmɛtrɪk) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —adj | |
| 1. | logic, maths asymmetric antisymmetric Compare nonsymmetric (of a relation) holding between a pair of arguments x and y when and only when it holds between y and x, as … is a sibling of … but not … is a brother of … |
| 2. | another word for symmetrical |
| symmetrical (sɪˈmɛtrɪkəl) | |
| —adj | |
| 1. | Compare asymmetric possessing or displaying symmetry |
| 2. | maths |
| a. (of two points) capable of being joined by a line that is bisected by a given point or bisected perpendicularly by a given line or plane: the points | |
| b. (of a configuration) having pairs of points that are symmetrical about a given point, line, or plane: a circle is symmetrical about a diameter | |
| c. (of an equation or function of two or more variables) remaining unchanged in form after an interchange of two variables: x + y = z is a symmetrical equation | |
| 3. | chem (of a compound) having a molecular structure in which substituents are symmetrical about the molecule |
| 4. | botany another word for isomerous |
| 5. | Also: symmetric (of a disease, infection, etc) affecting both sides of the body or corresponding parts, such as both legs |
| sym'metrically | |
| —adv | |
| sym'metricalness | |
| —n | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
symmetric (sĭ-mět'rĭk) or symmetrical  (sĭ-mět'rĭk) Pronunciation Key
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The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
FOLDOC
Computing Dictionary
symmetric definition
mathematics1. A relation R is symmetric if, for all x and y,
x R y => y R x
If it is also antisymmetric (x R y & y R x => x == y) then x R y => x == y, i.e. no two different elements are related.
2. In linear algebra, a member of the tensor product of a vector space with itself one or more times, is symmetric if it is a fixed point of all of the linear isomorphisms of the tensor product generated by permutations of the ordering of the copies of the vector space as factors. It is said to be antisymmetric precisely if the action of any of these linear maps, on the given tensor, is equivalent to multiplication by the sign of the permutation in question.
(1996-09-22)
Example sentences
Geographically these two symmetric admixture events make sense, but the exclusivity is still a bit surprising.
Aliens that had spherically symmetric bodies might have never had a need for a notion of orientation.
Also, for it to be a rocket the spiral is too symmetric.
That's useful, they say, because no other measure gives this kind of symmetric signal for all healthy people.
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