adventitious

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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 ?
Adventitious root initiation, plasticity, and response to plant growth regulator treatments of seedling, juvenile, and adult Elaeocarpus hookerianus plants.
Effect of dietary wild-ginseng adventitious root meal on growth performance in broiler chickens Items CON (1) WGM0.
When Zobel crossed a mutant tomato plant that had no lateral roots with one that had no adventitious roots, he should have gotten an offspring with only a tap root, according to the conventional wisdom that said only those three types of roots existed.
Table 2: Effect of in vitro-induced salinity on adventitious root growth of cucumber microshoots grown on proliferation medium containing 1 [mg.
A transient increase in NO concentration was shown to be required and to be part of the molecular events involved in adventitious root development induced by IAA (Pagnussat et al.
The conventional propagation of this species was associated with various problems such as limitation of stock plants and prolonged production time [4] and low adventitious root formation on cuttings.
In general, adventitious root growth was significantly decreased by increasing sorbitol concentrations (Table 2).
This secondary sprouting typically leads to the development of a multitrunked form in which each stem develops its own adventitious root system that reanchors the tree to the unstable substrate.
Production of saponins from Panax ginseng suspension and adventitious root cultures.
Endogenous level of abscisic acid, indole-3-acetic acid, zeatin and zeatin-riboside during the course of adventitious root formation in cuttings of Craigella and Craigella lateral suppressor tomatoes.
The genes rolB and rolC differ in their function to stimulate adventitious root induction in tobacco-leaf segments (Aoki & Syono, 1999).
Effect of the ectomycorrhizal fungus Hebeloma hiemale on adventitious root formation in demoted Pinus halepensis hypocotyls.