GLYCOLIC a.
acid. Glycolic acid (Chem.), an organic acid, found naturally in unripe grapes and in the leaves of the wild grape (Ampelopsis quinquefolia), and produced artificially in many ways, as by the oxidation of glycol, -- whence its name. It is a sirupy, or white crystalline, substance, HO.CH2.CO2H, has the properties both o…
GOLD n.
, the prepared outside membrane of the large intestine of the ox, used for separating the leaves of metal during the process of gold-beating. -- Gold beetle (Zoöl.), any small gold-colored beetle of the family Chrysomelidæ; -- called also golden beetle. -- Gold blocking, printing with gold leaf, as upon a book cover,…
GOLDEN a.
unculaceous herb (Hydrastis Canadensis), with a thick knotted rootstock and large rounded leaves. -- Golden sulphide, or sulphuret, of antimony (Chem.), the pentasulphide of antimony, a golden or orange yellow powder. -- Golden warbler (Zoöl.), a common American wood warbler (Dendroica æstiva); -- called also blue-ey…
GOOSE n.
of the genus Galium (G. Aparine), a favorite food of geese; -- called also catchweed and cleavers. (b) A species of knotgrass (Polygonum aviculare). (c) The annual spear grass (Poa annua). -- Goose neck, anything, as a rod of iron or a pipe, curved like the neck of a goose; specially (Naut.), an iron hook connecting a…
GORDIUS n.
nus of long, slender, nematoid worms, parasitic in insects until near maturity, when they leave the insect, and live in water, in which they deposit their eggs; -- called also hair eel, hairworm, and hair snake, from the absurd, but common and widely diffused, notion that they are metamorphosed horsehairs.…
GRAPE n.
pe hopper (Zoöl.), a Small yellow and red hemipterous insect, often very injurious to the leaves of the grapevine. -- Grape moth (Zoöl.), a small moth (Eudemis botrana), which in the larval state eats the interior of grapes, and often binds them together with silk. -- Grape of a cannon, the cascabel or knob at the br…
GRAPHITE n.
also foliated or granular massive, of black color and metallic luster, and so soft as to leave a trace on paper. It is used for pencils (improperly called lead pencils), for crucibles, and as a lubricator, etc. Often called plumbago or black lead. Graphite battery (Elec.), a voltaic battery consisting of zinc and carb…
GREEN a. 3 definitions
.), a thorny climbing shrub (Emilaz rotundifolia) having a yellowish green stem and thick leaves, with small clusters of flowers, common in the United States; -- called also cat brier. -- Green con (Zoöl.), the pollock. -- Green crab (Zoöl.), an edible, shore crab (Carcinus menas) of Europe and America; -- in New Eng…
GUM n.
United States (Liquidambar styraciflua), a large and beautiful tree with pointedly lobed leaves and woody burlike fruit. It exudes an aromatic terebinthine juice. -- Gum water, a solution of gum, esp. of gum arabic, in water. -- Gum wood, the wood of any gum tree, esp. the wood of the Eucalyptus piperita, of New Sou…