par·si·mo·ni·ous 
(pär′sə-mōnē-əs)
(pär′sə-mōnē-əs)adj.
1. Excessively sparing or frugal.
2. Accounting for observed data with a relatively simple explanation: The physicist argued that her new theory was more parsimonious than the standard model.
par′si·moni·ous·ly adv.
par′si·moni·ous·ness n.