(firearms) A bullet with a small hole drilled or molded in the tip, designed to expand when it hits its target and therefore cause more damage.

(mathematics, catastrophe theory) The point at which a slow, reversible change becomes irreversible, often with dramatic consequences.

(mathematics) Of a number, written in two parts as a mantissa (also called significand, the value of the significant digits) and characteristic (order of magnitude / the power of a number base) e.g. 0.314159 × 10¹.

One hundredth of a given value, used to measure the difference of two percentages.

(cooking) The temperature at which an oil or shortening begins to produce smoke.

(of a bullet) having an exposed lead point, designed to expand when it hits its target and therefore cause more damage.

(firearms) A bullet with such a tip.

(physics, chemistry) The temperature at which a liquid freezes, and the solid and liquid phases are in equilibrium; normally the same as the melting point.

(databases) In a DBMS, a point in time at which all updates to a database, or group of records in a database, are guaranteed to have been written to disk, and the journal or log records of that action have also been so committed. Future updates may be undone to that point if necessary.

(chemistry, physics) The temperature at which the solid and liquid phases of a substance are in equilibrium; it is relatively insensitive to changes in pressure