cycloid
Wheel-traced arc path
A cycloid is the curve traced by a point on the rim of a circle as the circle rolls along a straight line—imagine the path a spot on a tire traces as the wheel moves forward.
In mathematics, it has elegant properties that made it historically important in physics and calculus.
As an adjective, cycloid describes something resembling a circle or cycle.
In psychology, cycloid refers to a temperament marked by alternating moods—not as severe as bipolar disorder, but showing rhythmic swings between elation and depression.
Curve from rolling circle
- rouletteSpinning wheel wager
- cuspPoint of transition
- archCurved spanning structure
- involuteCurve traced while unwinding
rolling · trajectory · parametric · path · prolate · catenary · envelope · oscillation
Toothed wheel, small
- sprocketToothed wheel for chains
- cogwheelToothed rotating machine part
- transmissionSending of information
- reductionMaking something smaller
torque · mesh · engagement · planetary · rack · watchmaking · horology · drivetrain
Having two opposite poles
- affectiveRelating to emotions
- temperamentInborn behavioral nature
- cyclothymiaMild mood disorder
- personality typeClassification of characteristic traits
Bony, ray-finned fish
- carpWhine about trivialities
- salmonPink-fleshed migratory fish
- troutFreshwater game fish
- bassDeep pitch or fish
perch · dermal · bony · smooth · overlapping · concentric rings · growth rings · ichthyology
trochoid
Curve from rolling circle
involute · rolling · trajectory · parametric · path · prolate · catenary · envelope · oscillation · periodic
pinion
Toothed wheel, small
- sprocketToothed wheel for chains
- cogwheelToothed rotating machine part
- transmissionSending of information
reduction · torque · mesh · engagement · planetary · rack · watchmaking · horology · drivetrain · mechanical advantage
bipolar
Having two opposite poles
- affectiveRelating to emotions
- temperamentInborn behavioral nature
- cyclothymiaMild mood disorder
teleost
Bony, ray-finned fish
bass · perch · dermal · bony · smooth · overlapping · concentric rings · growth rings · ichthyology · mucus
cycloidangular
Sharp-edged or rawboned
rectilinear · straight line · angulate · polygonal · straight-line
cycloidstraight line
Undeviated continuous path
spiral · helix · parabola · catenary · linear path
cycloidstable
Secure and unchanging
even-tempered · emotionally stable · steady · constant · equable
- tropical cycloneRotating low-pressure ocean storm
- bomb cycloneRapidly intensifying low-pressure storm
- cyclone fenceWoven wire boundary barrier
- cyclone warningNotice of approaching rotating storm
- cyclone seasonPeriod of frequent rotating storms
- cyclone cellarUnderground severe weather refuge