lon·ga·nim·i·ty (lŏng'gə-nĭm'ĭ-tē, lông'-) n. Calmness in the face of suffering and adversity; forbearance.
[Middle English longanimite, from Old French, from Late Latin longanimitās, from longanimis, patient : Latin longus, long; see longitude + Latin animus, mind, reason; see anə- in Indo-European roots.]