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#REDIRECT [[Profound]]
[[File:lighterstill.jpg]][[File:Three_dimension.jpg|right|frame]]
==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from ''dep'' deep
*[http://en.wikipedia.org/wiki/14th_century 14th Century]
==Definitions==
*1a (1) : a deep place in a body of [[water]] <fish living at great depths> (2) : a part that is far from the outside or [[surface]] <the depths of the woods> (3) : [[abyss]]
:b (1) : a [[profound]] or [[intense]] state (as of [[thought]] or [[feeling]]) <the depths of misery>; also : a reprehensibly low condition <hadn't realized that [[standards]] had fallen to such depths> (2) : the middle of a time (as [[winter]]) (3) : the worst part
*2:a : the [[perpendicular]] measurement downward from a [[surface]]
:b : the direct linear measurement from front to back
*3: the [[quality]] of being deep
*4: the degree of [[intensity]] <depth of a [[color]]>; also : the quality of being [[profound]] (as in [[insight]]) or full (as of knowledge)
*5: the [[quality]] or state of being complete or thorough <a [[study]] will be made in depth>
==Description==
[[Three]]-[[dimensional]] [[space]] is a geometric 3-parameters model of the physical [[universe]] (without considering [[time]]) in which we exist. These three dimensions can be labeled by a combination of three chosen from the terms length, width, height, '''depth''', and breadth. Any three [[directions]] can be chosen, provided that they do not all lie in the same [[plane]].
In [[physics]] and [[mathematics]], a sequence of n numbers can be [[understood]] as a location in n-dimensional space. When n = 3, the set of all such locations is called 3-dimensional Euclidean space. It is commonly represented by the symbol [[File:R-3-2.jpg]] . This space is only one example of a great variety of spaces in three dimensions called [http://en.wikipedia.org/wiki/3-manifold 3-manifolds].[http://en.wikipedia.org/wiki/Three-dimensional_space]
[[Category: Mathematics]]
