connective

Short definition from Wiktionary

Adjective

1. 1
   Serving or tending to connect; connecting.

Noun

1. 1
   That which connects.
2. 2
   A function that operates on truth values to give another truth value.
3. 3
   A word used to connect words, clauses and sentences, most commonly applied to conjunctions.
4. 4
   The tissue which connects the locules of an anthers together.
5. 5
   A connective tissue.