5516. Strong's Dictionary Study
5516. chi xi stigma {khee xee stig'-ma}; the 22d, 14th and an
obsolete letter (4742 as a cross) of the Greek alphabet
(intermediate between the 5th and 6th), used as numbers;
denoting respectively 600, 60 and 6; 666 as a numeral: --six
hundred threescore and six.[ql
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