tropism


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Related to tropism: viral tropism

tro·pism

 (trō′pĭz′əm)
n.
The turning or bending movement of an organism or a part of an organism in a particular direction in response to an external stimulus such as light or gravity.

[From -tropism.]

tro′pic, tro·pis′tic adj.
tro·pis′ti·cal·ly adv.

tropism

(ˈtrəʊpɪzəm)
n
(Biology) the response of an organism, esp a plant, to an external stimulus by growth in a direction determined by the stimulus
[from Greek tropos a turn]
ˌtropisˈmatic adj
tropistic adj

tro•pism

(ˈtroʊ pɪz əm)

n.
the orientation of an organism toward or away from a stimulus, as light.
[1895–1900; independent use of -tropism]
tro•pis′tic (-ˈpɪs tɪk) adj.

-tropism

var. of -tropy.
[see -tropy, -ism]

tro·pism

(trō′pĭz′əm)
Growth or movement of a plant or animal toward or away from an external stimulus, such as light, heat, or gravity.

tropistic adjective

tropism

the tendency of a plant, animal, or part to move or turn in response to an external stimulus, as sunlight or temperature. — tropistic, adj.
See also: Motion

tropism

Directional growth movement of a plant in response to a stimulus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tropism - an involuntary orienting response; positive or negative reaction to a stimulus source
response, reaction - a bodily process occurring due to the effect of some antecedent stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age"
ergotropism - an affinity for work
geotropism - an orienting response to gravity
heliotropism - an orienting response to the sun
meteortropism - an effect of climate on biological processes (as the effect on joint pains etc.)
neurotropism - an affinity for neural tissues
phototropism - an orienting response to light
trophotropism - an orienting response to food
thermotropism - an orienting response to warmth
Translations

tropism

n (Biol) → Tropismus m

tro·pism

n. tropismo, tendencia de una célula u organismo a reaccionar de una forma definida (positiva o negativa) en respuesta a estímulos externos.
References in periodicals archive ?
Dynamic areas of molecular HIV testing include viral tropism and viral resistance testing," Salazar said.
4) The known species of Cryptosporidium form 2 clades, one with gastric tropism and one with primarily intestinal tropism, indicating that site of infection has had greater long-term fidelity than host species.
Mutations or deletions in the coronavirus S gene affect its pathogenicity and tissue tropism (10-12).
Prostate cancer cells have an exquisite tropism for bone, which clinically translates into the highest rate of bone metastases amongst male cancers.
Among the topics are expectations of a new man, Bureau of Eugenics, genealogies and pathographies, early medical genetics, conditional tropism and the Moscow School, and the fate of Koltsov's eugenics.
Guided by resistance and tropism testing, the investigators created individualized regimens from among 20 potential three- and four-drug combinations containing more than two active drugs, defined by a continuous phenotypic susceptibility score (cPSS) of more than 2.
After sifting through the "junk ideation" swirling all around us, Robinson appeals to our "primordial human tropism toward mystery," invites us to look with wonder at the prodigal nature of the human mind, and urges a fuller measure of empathy and generosity toward one another and the communal life we share.
The goal of this article is to discuss HIV testing, CD4 T-cell count determination, plasma viral load monitoring, drug susceptibility testing including tropism assays, and therapeutic drug monitoring.
Facet tropism is a condition of asymmetry in facet joint angles; one facet is orientated more coronally than the other.
Chapters address lentivirus tropism and disease, macrophages in HIV-1 infection, intracellular mechanisms for lentiviral restriction, simian-HIV and simian immunodeficiency virus models of HIV disease, host and viral determinants of feline immunodeficiency virus cell tropism and pathogenicity, equine infectious anemia virus and its pathogenesis, the bovine lentivirus infections, and lentivirus coinfections and superinfections, among other topics.
It targets specific cell types at different stages of its life cycle--a process called "cell tropism switching.
Publications from the Wild Hawthorn Press, which he cofounded in 1964, were on view, with works by a number of Finlay's colleagues including the Swiss and Brazilian originators of the movement, as well as two of his wall poems, which offered evidence of the liveliness produced through Finlay's unremitting emphasis on conflict--so unlike the tropism toward tautology typical of the genre.