Definition of "map" in 英语

noun

1. A visual representation of an area, whether real or imaginary, showing the relative positions of places and other features.

   • a map of Australia, a map of Lilliput
   • He bought a map for the tour of Edinburgh Castle.

2. A graphical or logical representation of any structure or system, showing the positions of or relationships between its components.

   • a map of the Earth's magnetic field

3. (mathematics) A function, especially a function satisfying a certain property (e.g. continuity, linearity, etc.; see Usage notes).

   • Let f be a map from ℝ to ℝ

4. (entomology) Any of various nymphalid butterflies of the genera Araschnia (especially, Araschnia levana) and Cyrestis, having map-like markings on the wings.

5. (UK, dated) The face.

6. (board games, video games) An imaginary or fictional area, often predefined and confined, where a game or a session thereof takes place.

   • I don't want to play this map again!
   • Jack loves playing on this Fortnite map.

7. (computing) Synonym of associative array.

verb

1. (transitive) To represent by means of a map.

   • This large atlas maps the whole world in very great detail.
   • Figure 3 maps the pressure distribution within the human circulatory system.

2. (transitive) To create a map of; to examine or survey in order to gather information for a map.

   • The team is mapping the route of the new railway line.
   • The space probe is mapping the Earth's gravitational field.
   • This equipment is designed to map the neurons of the human brain in three dimensions.

3. (intransitive, followed by a "to" phrase) To have a direct relationship; to correspond.

   • This doesn't map to my understanding of how things should work.

4. (transitive, followed by a "to" phrase) To create a direct relationship to; to create a correspondence with.

   • Map "volume down" to the F2 key.

5. (mathematics, transitive, followed by a "to" phrase) To act as a function on something, taking it to something else.

   • f maps A to B, mapping every a∈A to f(a)∈B.
   • Equivalently: f:A→B,a↦f(a)

6. (transitive, computing) To assign a drive letter to a shared folder.