separatrix

[ sep-uh-rey-triks, sep-uh-rey- ]

noun

, plural sep·a·ra·tri·ces [sep-, uh, -, rey, -tri-seez, -er-, uh, -, trahy, -seez], sep·a·ra·trix·es.

1. something that divides or separates, as the line between light and dark areas on a partially illuminated surface.
2. virgule.
3. Mathematics. one of several symbols for separating components of a number, as a decimal point or comma.

separatrix

/ ˈsɛpəˌreɪtrɪks /

noun

1. another name for solidus

Word History and Origins

Origin of separatrix¹

1650–60; < New Latin sēparātrīx, Late Latin; separator, -trix

Word History and Origins

Origin of separatrix¹

via New Latin from Late Latin, feminine of sēparātor one that separates