n.
Cycloid.
[Cyclo- + -meter.]
recording the revolutions of a wheel, as of a bicycle.
+ -metry: cf. F. cyclométrie.]
(Geom.)
[Gr.&?;&?;&?;&?;&?; moving in a circle, p. pr. of
&?;&?;&?;&?;&?;, fr.
winds rotating about a calm center of low atmospheric pressure.
This center moves onward, often with a velocity of twenty or
thirty miles an hour.
&fist; The atmospheric disturbance usually accompanying a
cyclone, marked by an onward moving area of high pressure, is
called an anticyclone.
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