שִׁשִּׁים (šiššîm) is
a Hebrew noun
meaning sixty. It appears
59 times
in 17 books of the Hebrew Bible
(Strong's H8346).
Same Hebrew root (TWOT 2336c)
Range of meaning (TWOT 2336c)sixty; three score
Full entry: Brown-Driver-Briggs and Strong's
שִׁשִּׁיםnoun, indeclinable: sixty
Strong's H8346שִׁשִּׁים: sixty KJV:sixty, three score.
Meanings: Brown-Driver-Briggs (1906) and Strong's Hebrew Dictionary (1890), public domain, via the Open Scriptures Hebrew Bible Project (CC BY 4.0). TWOT numbers for reference only.
Root family 2336: שׁדשׁšdš — Root of: שֵׁשׁ six; שִׁשָּׁה give sixth part of; שִׁשִּׁי sixth; שִׁשִּׁים sixty