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auxin

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
aux·in  (ôksn)
n.
Any of several plant hormones that regulate various functions, including cell elongation.

[From Greek auxein, to grow; see aug- in Indo-European roots.]

aux·inic adj.
aux·ini·cal·ly adv.

auxin [ˈɔːksɪn]
n
(Life Sciences & Allied Applications / Biochemistry) any of various plant hormones, such as indoleacetic acid, that promote growth and control fruit and flower development. Synthetic auxins are widely used in agriculture and horticulture
[from Greek auxein to grow]

auxin  (ôksn)
Any of various hormones or similar substances that promote and regulate the growth and development of plants. Auxins are produced in the meristem of shoot tips and move down the plant, causing various effects. Auxins cause the cells below the shoot apex to expand or elongate, and this (rather than cell division) is what causes the plant to increase in height. In woody plants, auxins also stimulate cell division in the cambium, which produces vascular tissue. Auxins inhibit the growth of lateral buds so that the plant grows upwards more than outwards. They can be produced artificially in laboratories for such purposes as speeding plant growth and regulating how fast fruit will ripen.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.auxin - a plant hormone that promotes root formation and bud growth
growth regulator, phytohormone, plant hormone - (botany) a plant product that acts like a hormone
IAA, indoleacetic acid - a plant hormone promoting elongation of stems and roots
indolebutyric acid - a synthetic plant hormone promoting elongation of stems and roots
Translations
auxin [ˈɔːksɪn] nauxina
auxin [ˈɔːksɪn] nauxina


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? Mentioned in ? References in periodicals archive
 
Auxin plays a role in just about every aspect of plant growth, from roots to shoots.
The Auxin story continued to be reported in most daily newspapers over the following week, and by 8 October six of the people being investigated had committed suicide.
When light hits outer flower petals it triggers a hormone (function-controlling chemical) called auxin that causes cells to grow and expand.
 
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