nonperpendicular
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nonperpendicular — adj., n.; nonperpendicularly, adv … Useful english dictionary
triclinic system — ▪ crystallography one of the structural categories to which crystalline solids can be assigned. Crystals in this system are referred to three axes of unequal lengths that are inclined at nonorthogonal (nonperpendicular) angles relative to… … Universalium
tilt — Slope. pantoscopic t. an oblique astigmatism caused by slanting a spherical lens so that light rays strike the lens at a nonperpendicular angle, altering the spherical and cylindrical … Medical dictionary