"A voxel represents a value on a regular grid in three-dimensional space. [...] The word voxel originated by analogy with the word "pixel", with vo representing "volume" and el representing "element""- from Wikipedia
"These cells are often called voxels (volume elements), in analogy to pixels."- in the book Computer Graphics: Principles and Practice
"A cubic 3D equivalent to the square 2D pixel. The name is a combination of the terms "Volumetric" and "Pixel". Used to store smoke and fire data from physics simulations."- from the Blender manual
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