adventitious
Cross references: 1. accidental ad.ven.ti.tious \.ad-v*n-'tish-*s\ aj [L adventicius] 1: added extrinsically and not inherent or innate 2: arising or occurring sporadically or in other than the usual location - ad.ven.ti.tious.ly av
Cross references: 1. accidental ad.ven.ti.tious \.ad-v*n-'tish-*s\ aj [L adventicius] 1: added extrinsically and not inherent or innate 2: arising or occurring sporadically or in other than the usual location - ad.ven.ti.tious.ly av