/uy"seuh tuyp'/ , n.
1. a drawing, diagram, or other symbol that represents a specific quantity of or other fact about the thing depicted: Every isotype of a house on that chart represents a thousand new houses.
2. a statistical graph, chart, diagram, etc., that employs such symbols.
3. Biol. any of two or more separate populations of the same or a similar type.
4. Immunol. any antigenic determinant that is common to all individuals in a species.
[ 1880-85; ISO- + TYPE ]