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WordNet 3.0Copyright Princeton University
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n. - (botany) a plant product that acts like a substance that exerts a stimulatory or excitatory effect on a cellular activity

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Usage examples (32)
  • It is known that phytohormone levels vary over the course of the day.
  • In addition, the wild-type time courses confirmed growth-specific expression of the phytohormone genes.
  • This result demonstrates that the timing of growth-associated phytohormone expression is important for wild-type growth.
  • Table S1 provides information about each phytohormone gene examined, including the time of maximum transcript abundance for the cycling gene.
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We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.