Coming from an external source or occurring in an unusual place or manner. Not inherent, inherited or innate but rather occurring accidentally or spontaneously. When a doctor or nurse auscults (listens to) the chest or abdomen, adventitious sounds are those that are normally not heard coming from the chest or abdomen. The word "adventitious&qu [..]

[L. adventicius, not properly belonging to] Referring to a structure arising from an unusual place, such as roots growing from stems or leaves.

associated by chance and not an integral part The derivation of the word thus appears to be merely accidental and adventitious. — Stace, W. T. (Walter Terence)

"of the nature of an addition from without," c. 1600, from Medieval Latin adventitius "coming from abroad, extraneous," a corruption of Latin adventicius "foreign, strange, ac [..]

Refers to an organ that forms in an unusual place, primarily roots that form on leaves, nodes or cuttings than on another root. adventitious bud:

Plant structures or organs, such as buds, shoots, or roots, produced in an abnormal position or that arise from other plant tissues.

Arising at an unexpected location. A plant organ, like a root, shoot or bud is produced in an unusual position or during an unusual time. Examples: Layering a stem down and pegging it to the soil pro [..]

buds buds that arise at sites other than the stem apex or leaf axil; adventitious buds may develop at stem internodes, at the edge of leaf blades, from callus tissue at the cut end of stems or roots, [..]

Not in the usual place. Adventious bud

Having occurred by chance or at random. Adventitious root -- Any root not the original radicle; a lateral root. Arising from organ other than root (Ibiblio Botanical Dictionary

Growth not ordinarily expected, usually the result of stress or injury. A plant's normal growth comes from meristematic tissue, but adventitious growth comes from nonmeristematic tissue.

Arising by chance, or unpredictably, out of the usual place.

 Refers to an organ that forms in an unusual place, primarily roots that form on leaves, nodes or cuttings than on another root.

A structure arising from an unusual place, such as roots growing from leaves or stems.

A structure arising at some location not usually expected, such as on a stem. adventitous root

showing up or happening out of the blue or in a strange destination.

term describing any organ arising in an abnormal position, e.g. roots arising from the shoot system.

(L. adventitius

Developing from unusual points of origin, such as shoots or root tissues from callus or embryos from sources other than zygotes. This term can also be used to describe agents which contaminate cell cu [..]

[Tree bole] -- Shoot or root arising on stem, bole or boughs.

Developing from unusual points of origin, such as shoots or root tissues from callus or embryos from sources other than zygotes. This term can also be used to describe agents which contaminate cell cu [..]

(adj) associated by chance and not an integral part

<botany> Describes roots or shoots or other parts that grow in an uncharacteristic place on a plant (such as roots growing from leaves). (06 May 1997)

Growth not ordinarily expected, usually the result of stress or injury. A plant's normal growth comes from meristematic tissue, but adventitious growth comes from nonmeristematic tissue.

A structure such as a bud or root that is produced on an unusual part of the plant (i.e., roots that come from stems).

From an external source; not innate or inherent, foreign. Accidental, additional, appearing casually. * '''2002''',en|extrinsic *en|accidental,en|acquired