advention/ədˈvɛn.ʃən/EtymologyFrom Medieval Latin advention (“addition”), ultimately from Latin adveniō (“to arrive”).advention means An external addition. Lexicurio rates it Sui generis — a strength score of 95 out of 100.nounAn external addition.“Fourthly, we will note, that ſomtimes ſome Bodies conceive a burning without the advention of another fire, only by their own effervency, and by the inteſtine motion of the implanted Particles, and of their own accord are reduced into Aſhes ; […]”