Reply To: Source for not saying the word “cancer?”

I don’t know if what the “mekor” is but we find that certain simanim in the Shulchan Aruch have the “osios” rearranged to not spell certain words:

Siman 275: The siman is referred to as “AYIN REISH HAY” and not “REISH AYIN and HAY”

http://www.hebrewbooks.org/pdfpager.aspx?req=49625&st=%D7%A2%D7%A8%D7%94&pgnum=107

Siman 344: The siman is referred to as “SHIN DALED MEM” and not “SHIN MEM and DALED”

http://www.hebrewbooks.org/pdfpager.aspx?req=49625&st=%D7%A2%D7%A8%D7%94&pgnum=388