Definition of cycloid
(Entry 1 of 2)
: a curve that is generated by a point on the circumference of a circle as it rolls along a straight line
cycloid
adjectiveDefinition of cycloid (Entry 2 of 2)
1
: smooth with concentric lines of growth
cycloid scales
also
: having or consisting of cycloid scales
2
: characterized by alternating high and low moods
a cycloid personality
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Merriam-Webster unabridged
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Time Traveler for cycloid
The first known use of cycloid was in 1661
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