Type: Term Definitions: 1. an axis through a particle (a virus) on such a plane that, if the particle is rotated on the axis, there are two or more positions at which the particle appears identical.Found on http://www.medilexicon.com/medicaldictionary.php?t=8979
A line that passes through a graph or figure such that one side of the figure is an exact mirror image of the other. Found on http://www.diracdelta.co.uk/science/source/a/x/axis%20of%20symmetry/source.
An axis through a particle (e.g., a virus) on such a plane that, if the particle is rotated on the axis, there are two or more positions at which the particle appears identical. ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
(from the article `quasicrystal`) Fivefold symmetry axes are forbidden in ordinary crystals, while other axes, such as sixfold axes, are allowed. The reason is that translational ... An axis is an imaginary centre line through a symmetrical or near symmetrical volume or group of volumes that suggests the gravitational pivot of the ... ...Found on http://www.britannica.com/eb/a-z/a/132
Is an imaginary line, which indicates a direction through a crystal structure about which the structure can be rotated to appear identical 2,3,4 or 6 times during one complete revolution.Found on http://gemologyonline.com/gemology_dictionary.htm
An imaginary line drawn through the center of a crystal that replicates the exact shape if the crystal is turned to 360Found on http://www.inlandlapidary.com/user_area/lapidary_terms.asp
No exact match found