Adjective: coincidental kow,in-si'den-t(u)l
- Occurring by chance at the same time or place; happening by coincidence
"Their coincidental meeting at the airport led to a lasting friendship"
- Occurring or operating at the same time
"a series of coincidental events";
- coincident, coinciding, concurrent, co-occurrent, simultaneous
See also: synchronal [archaic], synchronic, synchronous
Encyclopedia: Coincidental