Coincidental
来自Big Physics
early 17th century (in the sense ‘occupation of the same space’): from medieval Latin coincidentia, from coincidere ‘coincide, agree’ (see coincide).
wiktionary
co- + incidental
etymonline
coincidental (adj.)
"pertaining to or of the nature of coincidence," c. 1800, from coincident + -al (1).
