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Any of several plant hormones that regulate various functions, including cell elongation.
(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
[C20: from Greek auxein to grow]
any of a class of substances that in minute amounts regulate or modify the growth of plants, esp. root formation, bud growth, and fruit and leaf drop.
[< German (1931) < Greek aúx(ein) to increase + German -in -in1]
Any of various hormones or similar substances that promote and regulate the growth and development of plants. Auxins are produced in areas (called the meristem) in which new plant cells are formed. Auxins are also produced artificially in laboratories for purposes such as speeding growth and regulating how fast a fruit will ripen.
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|Noun||1.||auxin - a plant hormone that promotes root formation and bud growth|
indolebutyric acid - a synthetic plant hormone promoting elongation of stems and roots