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Re:How the number zero was ‘discovered’ by kazinator on Thursday December 08, 2016 @07:33PM (#13135684)
Might "sifr" be a cognate for "cipher"?

Slovak has two cognates: šifra (cipher: secret writing, plus some related meanings, such as an individual character of a secret writing, an abbreviated signature, or anidentifying mark) and the word cifra (digit). (Probably used a bit less than its synonym číslica).

The word ciferník denotes an instrument or clock dial (also číselník).

Re:How the number zero was ‘discovered’ by bbctol on Friday December 09, 2016 @06:19PM (#13142740)
Sifr is definitely a cognate for "cipher"!