1. (noun)model, theoretical account, framework a hypotheticaldescription of a complexentity or process "the computer program was based on a model of the circulatory and respiratory systems"
2. (noun)model a type of product "his car was an old model"
3. (noun)model, poser a person who poses for a photographer or painter or sculptor "the president didn't have time to be a model so the artist worked from photos"
4. (noun)model, simulation representation of something (sometimes on a smaller scale)
5. (noun)exemplar, example, model, good example something to be imitated
"an exemplar of success"; "a model of clarity"; "he is the very model of a modern major general"