adventitious
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Growing unpredictably out from its main taproot and elsewhere, this plant has bushy adventitious roots.
English
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Alternative forms
Etymology
From Latin adventīcius (“foreign”), from adveniō (“arrive”).
Pronunciation
Adjective
adventitious (comparative more adventitious, superlative most adventitious)
- From an external source; not innate or inherent, foreign.
- Accidental, additional, appearing casually.
- Synonyms: accidental, spontaneous, sporadic; see also Thesaurus:accidental
- 1895, Alfred C. Haddon, Evolution in Art, pages 101–102:
- The discovery of the art of making pottery was probably in all cases adventitious, the clay being first used for some other purpose.
- 2002, Colin Jones, The Great Nation, Penguin, published 2003, page 30:
- The adventitious disappearance of those nearer the throne than the duke had, moreover, set tongues awagging.
- (genetics, medicine) Not congenital; acquired.
- Synonym: acquired
- (biology) Developing in an unusual place or from an unusual source.
- Coordinate term: ectopic
- 1985, R. M. T. Dahlgren, H. T. Clifford, P. F. Yeo, The Families of the Monocotyledons, page 101:
- The Velloziaceae have evolved a woody stem which is covered with a layer of adventitious roots mingled with the fibres of the old leaf sheaths;
Derived terms
Related terms
Translations
from an external source
accidental, additional, appearing casually
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genetics, medicine: not congenital
biology: developing in an unusual place or from an unusual source
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