- resembling a circle; circular.
- (of the scale of a fish) smooth-edged, more or less circular in form, and having concentric striations.
- (of a fish) having such scales.
- of or noting a personality type characterized by wide fluctuation in mood within the normal range.
- a cycloid fish.
- a curve generated by a point on the circumference of a circle that rolls, without slipping, on a straight line.
- resembling a circle
- (of fish scales) rounded, thin, and smooth-edged, as those of the salmon
- (of a type of personality) characterized by exaggerated swings of mood between elation and depression
- the curve described by a point on the circumference of a circle as the circle rolls along a straight line
- a fish that has cycloid scales
