adj.
Pronunciation: ˌ ad-( ˌ )ven- ' ti-sh ə s, -v ə n-
Function: adjective
Etymology: Latin adventicius
Date: 1603
1 : coming from another source and not inherent or innate <a Federal house without adventitious later additions>
2 : arising or occurring sporadically or in other than the usual location < adventitious roots>
– ad · ven · ti · tious · ly adverb