An Etymological Dictionary of Astronomy and Astrophysics

1. General: Something that divides or separates. Plural: separatrices.
   

2. Math.: Any mark that separates digits in groups, such as the decimal point placed at the left of a decimal fraction, to separate it from the whole number which it follows.
   

3. Physics: A bundle of magnetic field lines which creates separate plasma regions.

Etymology (EN): From L. separatrix “she that separates,” → separation; -trix a suffix.

Etymology (PE): Jodâgar, from jodâ “separate,” → separation,

• -gar, → -or.