Ξ
Ξ ξ, ξεῖ (q.v.), τό, indecl., fifteenth (later fourteenth) letter of most of the Eastern Greek alphabets, including the Ionic (later general Gr.) alphabet ; not used in Western Greek alphabets or in the native Attic alphabet ; in form and serial position ( IG 14.2420 ) it corresponds to the Semitic
A). samech (a form of s), but has acquired the new value ks ; as numeral ξ’ = 60 , but = 60 , 000 .