1a diagrammatic representation of an area of land or sea showing physical features, cities, roads, etc.:a street map a two-dimensional representation of the positions of stars or other astronomical objects: she went inside to check a star map a diagram or collection of data showing the spatial arrangement or distribution of something over an area:an electron density map Biology a representation of the sequence of genes on a chromosome or of bases in a DNA or RNA molecule: a physical and genetic map of the entire human genome Mathematicsanother term for mapping.
, dated a person’s face: you ought to know my map by now
represent (an area) on a map; make a map of:inaccessible parts will be mapped from the air record in detail the spatial distribution of (something):the project to map the human genome
chiefly Mathematics associate each element of (a set) with an element of another set: the direct sum of two rings A and B may be mapped homomorphically on the summand
(map on to
) chiefly Mathematics be associated with or linked to: if more than one suffix can be mapped on to the end of a word then the longest is chosen for removal