−

See also: ‐ [U+2010 HYPHEN], – [U+2013 EN DASH], - [U+002D HYPHEN-MINUS], — [U+2014 EM DASH], and 一 [U+4E00 CJK UNIFIED IDEOGRAPH-4E00]

Translingual

Symbol

−

1. (mathematics) A minus sign. Used for the operation of subtraction.

   8 − 3 = 5

2. (mathematics) negative sign. "negative", "minus", "the opposite of"
   • Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich

     Decomposition of 4 in the presence of cis-piperylene at room temperature results in the stereocontrolled formation of trans-cycloheptadiene 27 in 90% ee (96% ee at -78 °C).

   −(−5) = 5

3. (mathematics) Relative complement. "minus", "without".

   {1,2,4} − {1,3,4} = {2}

4. (mathematics) from the negative side

   $\lim _{x\to a^{-}}f(x)$ is the same as $\lim _{x\uparrow a}\,f(x)$

5. (medicine) rejective result from laboratory test
6. (electricity) cathode

Quotations

For quotations using this term, see Citations:−.

Synonyms

• (relative complement): ∖

Related terms

• - (hyphen-minus)