separatrix

n.; pl. L. -trices E. -trixes [ L., she that separates. ] (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. [ 1913 Webster ]

n.; pl. L. -trices E. -trixes [ L., she that separates. ] (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. [ 1913 Webster ]