\ad-ven-TISH-uhs\, adjective: 1 Added extrinsically; not essentially inherent 2 (Biology) Out of the proper or usual place; as, "adventitious buds or roots "
associated by chance and not an integral part; "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"
Growth from an unusual or abnormal position; for example, roots developing from stems
Produced in an unusual position or time; can refer to any plant organ (bud, root, shoot)
concerns a shoot or root produced on an uncommon place such as a root on a branch
Extrinsic; not essentially inherent; arising from an external source not the essence of the subject; not naturally, normally or historically associated with the subject or event
Root growth in which the roots arise from the nodes in the stem, and prop roots form
buds or roots that develop in unusual areas Many wetland plants exhibit adventitious roots
Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign