separatrix Meaning, Definition & Usage

  1. noun a punctuation mark (/) used to separate related items of information
    virgule; solidus; diagonal; stroke; slash.

WordNet

Sep`a*ra"trix noun
Etymology
L., she that separates.
Wordforms
plural L -trices E -trixes
Definitions
  1. (Arith.) The decimal point; the dot placed at the left of a decimal fraction, to separate it from the whole number which it follows. The term is sometimes also applied to other marks of separation.

Webster 1913