TUCSON Meaning of TUCSON in English n.Pronunciation: ' tü- ˌ sän, esp locally tü- ' sän Function: geographical namecity SE Ariz. pop 486,699 – Tuc · son · an \ ' tü- ˌ sä-n ə n \ noun Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012