decimal point

/D EH1 S AH0 M AH0 L P OY1 N T/
noun
  1. 1

    A period/full stop ⟨.⟩ or middot ⟨·⟩ used to set off the decimal or fractional part of a number.

  2. 2

    (inexact) Any decimal mark, inclusive of commas, separatrices, etc.

  3. 3

    A decimal place.

Synonyms

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Source: https://en.wiktionary.org/wiki/decimal%20point