Adventitial
the external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel.
noun
the outermost covering of an organ or part, esp the outer coat of a blood vessel
adventitial ad·ven·ti·tial (ād’věn-tĭsh’əl, -vən-)
adj.
Of or relating to the adventitia of an organ or blood vessel.
Adventitious.
adventitia ad·ven·ti·tia (ād’věn-tĭsh’ə, -vən-)
n.
The outermost membranous covering of an organ or structure, especially the outer coat of an artery.
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associated with something by chance rather than as an integral part; extrinsic. Botany, Zoology. appearing in an abnormal or unusual position or place, as a root. Historical Examples Such acknowledgments are of high value in keeping the issue clear, if not always of all adventitious, yet of all venomous matter. The Works of Robert G. […]
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adventitious cyst adventitious cyst n. See pseudocyst.
- Adventitiously
associated with something by chance rather than as an integral part; extrinsic. Botany, Zoology. appearing in an abnormal or unusual position or place, as a root. Historical Examples He expresses the unalloyed sensibility of an artist in terms of delicious contemporary life and gives us, adventitiously, romance. Since Czanne Clive Bell adjective added or appearing […]