(athletics) any of the disciplines in athletics (track and field) that combine more than one other discipline: typically one of the indoor pentathlon (women), indoor heptathlon (men), outdoor heptathlon (women), or outdoor decathlon (men).

An inductive analytical diagram that uses Boolean logic to examine a chronological series of events and their consequences.

plural of event tree

(probability) an event associated with a given infinite sequence Y=y_k|k>k_0 that is determined by any subsequence of the form Y_n=y_k|k>n,n>k_0 (a "tail" of that sequence) / a low-probability event

A major event in one's life, normally bringing about a substantial change.

Alternative form of in any event

(chemistry) A period of time when large expanses ocean are depleted of dissolved oxygen.

(probability theory) An event that contains no possible outcomes and thus cannot possibly occur; an empty set.

(probability theory) An event that contains all of the possible outcomes and thus is known a priori to be certain to occur; the entire sample space.

(sports) A three-phase equestrian sport consisting of dressage, cross country, and show jumping.