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hypocotyl

noun hy·po·cot·yl \ ˈhī-pə-ˌkä-tᵊl \
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Definition of hypocotyl

: the part of the axis of a plant embryo or seedling below the cotyledon — see seedling illustration

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Origin and Etymology of hypocotyl

short for hypocotyledonous (stem), from hypo- + cotyledon + -ous

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  1. Britannica.com: Encyclopedia article about hypocotyl

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