Synonyms: model, theoretical account, framework
Definition: a hypothetical description of a complex entity or process
Usage: the computer program was based on a model of the circulatory and respiratory systems
Similar words: theory, possibility, hypothesis
Definition: a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena
Usage: a scientific hypothesis that survives experimental testing becomes a scientific theory; he proposed a fresh theory of alkalis that later was accepted in chemical practices