What does rel mean in a thesaurus?

"Rel" is not a word found in a thesaurus. It's likely a typo or an abbreviation that doesn't have a standard meaning in the context of a thesaurus.

Possible Misspellings or Abbreviations:

* Relate: This word is a verb that means to connect something to something else. A thesaurus would list synonyms for "relate" like "connect," "associate," "link," "explain," etc.

* Relative: This word can be an adjective meaning "comparative" or a noun meaning "a person connected by blood or marriage." A thesaurus would list synonyms for "relative" like "comparative," "proportional," "kin," "family member," etc.

* Relation: This word is a noun meaning "connection" or "relationship." A thesaurus would list synonyms for "relation" like "connection," "link," "relationship," "kinship," etc.

If you can provide more context about where you saw "rel," I might be able to help you understand what it meant.