(uncountable) (organic chemistry, biochemistry) an auxin plant hormone, synthesized in leaves, that stimulates growth, especially in the presence of ethylene ...
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Sinopec began operating a 1.2 million tons per year (tpy) ethylene plant that is designed to provide 4 million tons annually of high-end chemical products and fine chemical feedstocks, the state ...
Plant hormones, also known as phytohormones, are chemicals that regulate plant cell processes. They are signal molecules produced within the plant functioning in extremely low concentrations.