Hypodermic, hī-po-der′mik, adj. relating to the parts under the skin, subcutaneous, esp. of a method of injecting a drug in solution under the skin by means of a fine hollow needle to which a small syringe is attached—also Hypoder′mal.—n. Hypoder′ma, the layer of colourless cells immediately beneath the epidermis of a leaf. [Gr. hypo, under, derma, the skin.]

Hypogastric, hip-o-gas′trik, adj. belonging to the lower part of the abdomen.—ns. Hypogas′trium, the lower part of the belly; Hypogas′trocele, a hernia through the walls of the lower belly. [Gr. hypo, under, gastēr, the belly.]

Hypogene, hī′po-jēn, adj. (geol.) of or pertaining to rocks which have assumed their present structure under the surface, plutonic:—opp. to Epigene.—adj. Hypog′enous (bot.), produced below the surface, of fungi growing on the under side of leaves:—opp. to Epigenous and Epiphyllous. [Gr. hypo, under, genēs, produced.]

Hypogeum, hī-po-jē′um, n. the part of a building below the ground, any underground chamber.—adjs. Hypogē′al, Hypogæ′an, Hypogē′an, subterranean. [Gr. hypo, under, , the ground.]

Hypoglossal, hī-po-glos′al, adj. situated under the tongue. [Gr. hypo, under, glōssa, the tongue.]

Hypognathous, hī-pog′nā-thus, adj. (ornith.) having the under mandible longer than the upper, as the black skimmer.—n. Hypog′nathism.

Hypogynous, hī-poj′i-nus, adj. (bot.) growing from beneath the ovary, said of certain parts of plants. [Gr. hypo, under, gynē, a woman.]

Hyponasty, hī′po-nas-ti, n. (bot.) increased growth along the lower surface of an organ or part of a plant, causing the part to bend upward:—opp. to Epinasty.

Hypophosphite, hī-po-fos′fīt, n. (chem.) a salt obtained by the union of hypophosphorous acid with a salifiable base—also Hypophos′phate.—adjs. Hypophosphor′ic, Hypophos′phorous, containing less oxygen than phosphorous acid contains.

Hypophysis, hī-pof′i-sis, n. the pituitary body of the brain: (bot.) an inflated part of the pedicel under the capsule, in mosses; in flowering plants, a cell of the embryo producing the primary root and root-cap. [Gr. hypo, under, phyein, to grow.]