(computing, retronym) A printer in which each character is produced by part of the mechanism striking the paper (normally through an inked ribbon)

plural of impact printer

(law) Testimony, either oral or written, provided during a proceeding in a court of law which describes the harmful effects produced by the actions of an accused or convicted party and suffered by the victim or others, offered especially for consideration by the court in deciding an appropriate punishment.

(geology, astronomy) A crater formed from a hypervelocity impact, typically of a meteorite, as opposed to one formed by other means such as vulcanism.

The rejection for employment, placement, or promotion of a significantly higher percentage of a protected class, when compared with a non-protected class.

(materials science) The energy needed to fracture a material under standard conditions.

A measure reflecting the average number of citations to recent articles published in an academic journal, used as an approximation of the relative importance of a journal within its field.

plural of impact factor

A period of prolonged cold weather due to the impact of a large asteroid or comet on the Earth's surface.

plural of impact winter