ADVENTITIOUS

ADVENTI'TIOUS, adjective [Latin adventitius, from advenio. See Advent.]Added extrinsically; accidental; not essentially inherent; casual; foreign.Diseases of continuance get an adventitious strength from custom.

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adventitious. Adventitious, a. accidental, casual, not natural, additional added

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Ad′ven‐ti″tious (�), a. [[L. adventitius.]] 1. 1. Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign.
To things of great dimensions, if we annex an adventitious idea of terror, they become without comparison greater. Burke. 2. 2. (Nat. Hist.) Out of the proper or usual place; as, adventitious buds or roots.
3. 3. (Bot.) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; — applied to foreign plants.
4. 4. (Med.) Acquired, as diseases; accidental.
— Ad′ven‐ti″tious‐ly, adv. — Ad′ven‐ti″tious‐ness, n.