1. The temporal property of two things happening at the same time
   - concurrence, coincidence, co-occurrence 
2. The state of being joined together
   - junction, conjugation, colligation 
3. An uninflected function word that serves to conjoin words or phrases or clauses or sentences
   - conjunctive, connective, continuative 
4. The grammatical relation between linguistic units (words or phrases or clauses) that are connected by a conjunction 
5. (astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac
   - alignment 
6. Something that joins or connects
   - junction

Derived forms: conjunctions

Type of: closed-class word, connecter, connection, connective, connector, connexion [Brit], encounter, function word, grammatical relation, meeting, simultaneity, simultaneousness, unification, union

Encyclopedia: Conjunction

• family Oleaceae
• family Oleandraceae
• family Onagraceae
• family Oniscidae
• family Ophidiidae
• family Ophiodontidae
• family Ophioglossaceae
• family Opisthocomidae
• family Opisthognathidae
• family Orchestiidae
• family Orchidaceae
• family Orectolobidae
• family Oriolidae
• family Ornithorhynchidae
• family Orobanchaceae
• family Orycteropodidae
• family Oscillatoriaceae
• family Osmeridae
• family Osmundaceae
• family Osteoglossidae
• family Ostraciidae
• family Ostraciontidae
• family Ostreidae
• family Otariidae
• family Otididae