n. the 3rd letter of the Greek alphabet
n. a unit of magnetic field strength equal to one-hundred-thousandth of an oersted
n. Portuguese navigator who led an expedition around the Cape of Good Hope in 1497; he sighted and named Natal on Christmas Day before crossing the Indian Ocean (1469-1524)
n. 希腊字母表的第三个字母( gamma的复数形式 )