(algebra) A set of algebraic structures (which are part of a concrete category; e.g., modules) and a set of morphisms between them (e.g., module homomorphisms) which all together form a small category which is the image of a covariant functor whose domain is a directed poset.

(algebra) A set of equivalence classes which partition the disjoint union of the members of a direct system; each equivalence class being a sort of “drainage basin” of the mappings (of the morphisms) of the direct system, if these are analogically considered as “rivers”. (If i<k,j<k in the indexing poset, then there exist f_ik:A_i→A_k and f_jk:A_j→A_k. If a_i∈A_i,a_j∈A_j such that f_ik(a_i)=f_jk(a_j) then a_i∼a_j. If k = j then f_jj(a_j)=a_j,f_ij(a_i)=a_j.)

Used other than figuratively or idiomatically: see direct, access. / (computing) Synonym of random access

The practice, of cats and some other animals, of placing their hindfeet in the same place as (i.e. in the prints left by) their forefeet.

An ability to navigate.

Of a motion picture, initially released on digital streaming platforms without prior showings in cinemas or on television.

A sign which indicates which way to go to a certain place.

plural of direction sign

plural of direction indicator

(automotive) A turn signal or indicator. / (aviation) An instrument that shows both the current heading and the desired heading needed to follow a predetermined course.