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trochoid
[ troh-koid ]
noun
- Geometry. a curve traced by a point on a radius or an extension of the radius of a circle that rolls, without slipping, on a curve, another circle, or a straight line. Equation: x = aθ − b sin θ, y = a − b cos θ.
adjective
- rotating on an axis, as a wheel.
trochoid
/ ˈtrəʊkɔɪd /
noun
- the curve described by a fixed point on the radius or extended radius of a circle as the circle rolls along a straight line
adjective
- rotating or capable of rotating about a central axis
- anatomy (of a structure or part) resembling or functioning as a pivot or pulley
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Derived Forms
- troˈchoidally, adverb
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Other Words From
- tro·choidal adjective
- tro·choidal·ly adverb
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Word History and Origins
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Word History and Origins
Origin of trochoid1
C18: from Greek trokhoeidēs circular, from trokhos wheel
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Example Sentences
Then any point in the circumference of the half-crown will move through a curve called a ‘trochoid.’
From Project Gutenberg
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