separatrix

Meanings

Noun

a punctuation mark (/) used to separate related items of information
The ⟨L⟩ or pipe ⟨|⟩ mark formerly used to divide integers from decimals.
Synonym of decimal point, which replaced such marks.
The proofreader's mark resembling a slash ⟨ / ⟩ or vertical bar ⟨ | ⟩ placed after a note in the margin to indicate that it should replace the item(s) struckthrough in the running text or to separate it from other margin notes.
A terminator: a line on a partially-illuminated surface separating the lit and shaded regions.
The line between regions having different magnetic fields.
The boundary separating two modes of behavior in a differential equation.

Origin / Etymology

Learned borrowing from Latin sēparātrīx, the feminine form of separator (originally owing to an implied līnea (“line”)), from sēparāre (“to divide; to separate”) + -trix (forming female agents). By surface analysis, separate + -trix. First developed as a decimal mark among the medieval Arab mathematicians, whence a shorter variant gave rise to the decimal comma employed by many European countries and their former colonies.

Synonyms

decimal point, diagonal, pipe, slash, solidus, stroke, virgule, which replaced such marks

Scrabble Score: 19

separatrix is not valid in Scrabble (US) TWL Dictionary
separatrix is not valid in Scrabble (MW) Merriam-Webster Dictionary
separatrix is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 0

separatrix is not valid in Words With Friends