adventitious


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.

adventitious

 [ad″ven-tish´us]
not normal to a part.

ad·ven·ti·tious

(ad-ven-tish'ŭs),
1. Arising from an external source or occurring in an unusual place or manner.
See also: extrinsic.
2. Occurring accidentally or spontaneously, as opposed to naturally or through heredity.
3. Synonym(s): adventitial

adventitious

/ad·ven·ti·tious/ (ad″ven-tish´us)
1. accidental or acquired; not natural or hereditary.
2. found out of the normal or usual place.

adventitious

(ăd′vĕn-tĭsh′əs, -vən-)
adj.
1. Arising from an external cause or factor; not inherent: "These rodents ... appear suddenly in the Oligocene, as if by adventitious entrance independent of the rest of the fauna" (George Gaylord Simpson).
2. Biology Of or belonging to a structure that develops in an unusual place: adventitious roots.

ad′ven·ti′tious·ly adv.
ad′ven·ti′tious·ness n.

adventitious

1 pertaining to an accidental condition or an arbitrary action.
2 not hereditary.
3 occurring at an inappropriate place, such as a coating on an artery.

ad·ven·ti·tious

(ad'vĕn-tish'ŭs)
1. Arising from an external source or occurring in an unusual place or manner.
See also: extrinsic
2. Occurring accidentally or spontaneously, as opposed to natural causes or hereditary.
3. Synonym(s): adventitial.

adventitious

1. Accidentally acquired or added by chance.
2. Occurring in an unusual place or in an irregular manner.

adventitious

  1. (of a root) growing laterally from a stem rather than the main root, e.g. prop roots of maize, clinging roots of climbing vines, and roots of BULBS, such as the daffodil.
  2. (of a bud) not developing in a leaf axil, as in Begonia where such buds can be produced from leaf wounds.

adventitious

formed after birth

ad·ven·ti·tious

(ad'vĕn-tish'ŭs)
1. Arising from an external source or occurring in an unusual place or manner.
2. Occurring accidentally or spontaneously, as opposed to naturally or through heredity.
3. Synonym(s): adventitial.

adventitious

1. accidental or acquired.
2. not in the usual place.

adventitious breath sounds
see breath sounds.
adventitious movements
purposeless movements; as seen in distemper myoclonus in dogs.
References in periodicals archive ?
The loss of adventitious rooting competence related to maturation is a limiting factor in clonal forestry, since many traits or desirable characteristics are expressed only in adult plants (PIJUT et al.
Condition optimization for Induction and Proliferation of Red Pitaya Adventitious Shoots
An obvious elongation but slight expansion of adventitious roots was observed after they were transferred to the medium without NAA (Fig.
The gene, designated Adventitious rootless1 (ARL1), encodes a protein with a LATERAL ORGAN BOUNDARIES (LOB) domain.
In vitro adventitious root formation was observed from 10th day to 22nd day from inoculation.
Buds that develop on the plant at positions other than the leaf axil are termed adventitious buds.
Layering is a method of propagation in which adventitious roots develop before removal of the shoot from the mother plant.
The elimination of serum effectively reduces performance variability and removes safety risks associated with possible adventitious agents in serum.
The papers are presented in sections that accord with the conference's seven sessions, which mores specifically covered potential oncogenicity of cellular DNA; potential oncogenicity of viruses latent in cells; routine adventitious agent tests and the possibility of replacing in vivo methods, the level of assurance provided by guidelines, particularly the International Conference on Harmonization's Q5A and Q5D; experience with novel cell lines; bovine and porcine viruses; and bovine spongiform encephalopathy as a potential contaminant of cell substrates.