Definition of "hypoderma" []

• A layer of tissue beneath the epidermis in plants, performing the physiological function of strengthening the epidermal tissue. In phanerogamous plants it is developed as collenchyma. (noun)
• An inner cellular layer which lies beneath the chitinous cuticle of arthropods, annelids, and some other invertebrates. (noun)

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• "n. swelling or abcess beneath the skin on the back of horses, cattle, and other mammals, caused by the presence of the larva of a warble fly hypoderma bovis."