Dictionary entry overview: What does isle mean? â¢ ISLE (noun) The noun ISLE has 1 sense: 1. a small island Familiarity information: ISLE used as a noun is very rare.
The sulfate ion is SO42- The sulfite ion is SO32- and is more basic that sulfate.
Letâs start with the dictionary definitions of what a sulfite is. According to the dictionary there are two definitions for sulfite. These definitions are as follows: a salt or ester of sulfurous acid.