adventitious > define

adjective

• Associated by chance and not an integral part.
  • usage: "poetry is something to which words are the accidental, not by any means the essential form- Frederick W. Robertson; "they had to decide whether his misconduct was adventitious or the result of a flaw in his character"

• (a.) Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign.
• (a.) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants.
• (a.) Acquired, as diseases; accidental.
• (a.) Out of the proper or usual place; as, adventitious buds or roots.