סִדְרָה The Hebrew word for a series of any kind is סִדְרָה (seed-RAH), from the word סֵדֶר (SEH-dehr), meaning order (yes, like the Passover Seder). That’s because a series is a group of things set in a particular order.
Likewise, the related English adjective serial is סִדְרָתִי (seed-rah-TEE) in Hebrew. So a serial killer is a רוֹצֵחַ סִדְרָתִי (roh-TSEH-ahkh seed-rah-TEE) – if it’s a male.
סדרה is also one of the terms for weekly Torah portion, though it is pronounced by the European or English-speaking rabbis who use the term as SED-rah.
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