01 a. Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign.
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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.
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2.
Out of the proper or usual place; as, adventitious buds or roots.(Nat. Hist.)
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3.
Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants.(Bot.)
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4.
Acquired, as diseases; not hereditary; accidental.(Med.)