Cusper vs. Cusp

A person considered to have been born on a cusp between significant generations

(astrology) A person born on a day at a junction of star signs

A cusper is a person born near the end of one generation and the beginning of another. People born in these circumstances tend to have a mix of characteristics common to their adjacent generations, but do not closely resemble those born in the middle of their adjacent generations.

A sharp point or pointed end.

(figuratively) An important moment when a decision is made that will determine future events.

(geometry) A point of a curve where the curve is continuous but has no derivative, but such that it has a derivative at every nearby point.

(architecture) A point made by the intersection of two curved lines or curved structures, a common motif in Gothic architecture.

(astrology) A boundary between zodiacal signs and houses.

(dentistry) Any of the pointed parts of a canine tooth or molar.

(anatomy) A flap of a valve of a heart or blood vessel.

A point of transition.

A triangular protection from the intrados of an arch, or from an inner curve of tracery.

The beginning or first entrance of any house in the calculations of nativities, etc.

The point or horn of the crescent moon or other crescent-shaped luminary.

A multiple point of a curve at which two or more branches of the curve have a common tangent.

A prominence or point, especially on the crown of a tooth.

A sharp and rigid point.

To furnish with a cusp or cusps.

point formed by two intersecting arcs (as from the intrados of a Gothic arch)

a thin triangular flap of a heart valve

small elevation on the grinding surface of a tooth