What's the adjective for conjunct? Here's the word you're looking for.
conjunctive
(astronomy) Relating to a conjunction (appearance in the sky of two astronomical objects with the same right ascension or the same ecliptical longitude).
(grammar) Relating to a conjunction (part of speech).
“Symptoms include nasal congestion, ptosis of one eyelid, miosis, and conjunctional hyperemia.”
“Shown are conjunctional clusters in different groups of subjects, superimposed on the standard brain.”
“Requirements of subject matter and personal jurisdiction are conjunctional, as both must be met before a court has authority to adjudicate rights of parties to a dispute.”