Question about optical isomer notation

[wolff_kishner]

I am confused about the (+) and (-) abbreviations for describing optical isomers. The abbreviation page on this site indicates that (-) is dextro and (+) is levo. However, in other chemistry-related web sites and books that I have read, (+) is dextro and (-) is levo. Who is correct?

[ApprenticeCook]

Dextro - light rotates clockwise
Levo - light rotates anti-clockwise

So that makes dextro (+) and levo (-)

Hope that helps.
Where is the page that says dextro is (-)
-AC

[longimanus]

For those unfamiliar with stereochemistry nomenclature  reading IUPAC recommendations will be beneficial:

Stereochemical Terminology

(http://www.chem.qmul.ac.uk/iupac/stereo/)

[wolff_kishner]

Where is the page that says dextro is (-)

The hive's own abbreviation page, in the FAQ section.

https://www.the-hive.ws/forum/showtext.pl?Cat=&Show=abbrev

[ApprenticeCook]

Must be a typo.

I always get things like that around the wrong way so i looked it up before i posted to make sure it was right...

-AC

[Rhodium]

It is a typo, and we'll fix it.