(mɔːˈfæktɪn) n (Biochemistry) a synthetic compound containing fluorine that controls plant growth and development
mor•phac•tin
(mɔrˈfæk tɪn)
n. any of various compounds derived from fluorine and carboxylic acid that regulate the growth and development of plants. [1965–70; morph- + act (ive) or act (ivate) + -in1]