plural of Tissot's indicatrix

(cartography) A mathematical contrivance used to characterize local distortions due to map projection. It is the geometry that results from projecting a circle of infinitesimal radius from a curved geometric model, such as a globe, onto a map.

(law) a name or sign used on products which corresponds to a specific geographical location or origin

A vote with no legal implication; a vote to test the prevalent mood in a given body of members

(economics) A form of economic planning based on imperfect information, employing grants, subsidies and other influences but not imposing mandatory quotas.

(rail transport) A panel attached to a colour light signal situated just before a junction, which when lit up indicates that a diverging route has been set for the next train.

plural of route indicator

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.

plural of indicated airspeed