Symbol
·
- (mathematics) The product operator.
- Synonyms: ×, *
- Antonyms: ÷, /
7 · 8 = 56
- (in a few countries, such as the UK) A decimal point.
3·14, £1,234·99
- (mathematics, vectors) The dot product operator.
(1,2,5) · (3,4,−1) = 6
- (mathematics) Indicates what elements can vary.
If we have f(x,y) we can analyze the properties of f(·,y) which is a function of x found by fixing a particular y.
- (chemistry) Indicates addition compounds.
BF3·NH3
- (music) A pointing mark in Anglican chant, which indicates nonstandard places in the text where the chant should change note.
- Coordinate terms: |, ', :, *, —, ‖, †
- See ・ for the middle dot used in Japanese katakana.
- See ‧ for the hyphenation point.
Usage notes
- (decimal point): Many Britons employ the American decimal point ⟨.⟩ owing to a general lack of support for the middot character on computers. It remains common in writing done by hand.
- (addition compound): The IUPAC Recommendations for Nomenclature of Organic Chemistry[1] state: “Centre dots in formulae of (formal) addition compounds, including hydrates, adducts, clathrates, double salts and double oxides, separate the individual constituents. The dot is written in the centre of the line to distinguish it from a full stop (period).”