A symbol, such as a colon, composed of two points. / (mathematics) A point on a curve at which there are two tangents (because it touches itself, or has a cusp).

(fluid dynamics) The point in space at which fluid flow around an object changes from laminar to turbulent.

(aviation) The point in an aircraft's flight when there is insufficient fuel to reverse direction and return to the place of origin.

Alternative spelling of break-even point

(genetics) A mutation that involves the replacement, addition or deletion of a small number of bases (especially just one) at a specific site within a gene.

(therapy) A specific small area of the body, on an energy line, sensitive to and suitable for therapeutic pressure.

(idiomatic) To understand; to interpret correctly.

A particular location which is used as an endpoint when measuring distances or charting maps. / A unique, intellectual premise used to relate other to ideas.

A dark brown area of fur on the ears, face, legs, and tail of a Siamese cat. / A cat that has such a marking.

(perspective) A point on the horizon at which two parallel lines appear to meet.