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The projecting solid angle formed by the meeting of two vaults, growing more obtuse as it approaches the summit.

-- Ground fish (Zoöl.), any fish which constantly lives on the botton of the sea, as the sole, turbot, halibut. -- Ground floor, the floor of a house most nearly on a level with the ground; -- called also in America, but not in England, the first floor. -- Ground form (Gram.), the stem or basis of a word, to which t…

Solidly; deeply; thoroughly. [Obs.] Those whom princes do once groundly hate, Let them provide to die as sure us fate. Marston.

A tool for smoothing the solder joints of lead pipe. Knight.

A building which is occupied by the guard, and in which soldiers are confined for misconduct; hence, a lock-up.

To solve by a correct conjecture; to conjecture rightly; as, he who guesses the riddle shall have the ring; he has guessed my designs.

A noncommissioned officer or soldier placed on the directiug flank of each subdivision of a column of troops, or at the end of a line, to mark the pivots, formations, marches, and alignments in tactics. Farrow. Guide bar (Mach.), the part of a steam engine on which the crosshead slides, and by which the motion of the p…

pia aromatica, a tree of the order Anonaceæ, found in tropical West Africa. They are also sold under the name of Piper Æthiopicum. --Guinea pig.

A vegetable secretion of many trees or plants that hardens when it exudes, but is soluble in water; as, gum arabic; gum tragacanth; the gum of the cherry tree. Also, with less propriety, exudations that are not soluble in water; as, gum copal and gum sandarac, which are really resins.

The goods and wares sold by a haberdasher; also (Fig.), trifles. Burke.

An apparatus for measuring the amount of hemoglobin in a fluid, by comparing it with a solution of known strength and of normal color.

A breaking up of the blood corpuscles, as by pressure, in distinction from solution of the corpuscles, or hæmcytolysis.

A soldier armed with a hagbut or arquebus. [Written also hackbutter.] Froude.

Formerly, a mercenary foot soldier in Hungary, now, a halberdier of a Hungarian noble, or an attendant in German or Hungarian courts. [Written also hayduck, heiduc, heiduck, and heyduk.]

said to lay her eggs in nests on or near the sea during the calm weather about the winter solstice.

A fee or toll paid for goods sold in a hall.

Not easily penetrated, cut, or separated into parts; not yielding to pressure; firm; solid; compact; -- applied to material bodies, and opposed to soft; as, hard wood; hard flesh; a hard apple.

To become hard or harder; to acquire solidity, or more compactness; as, mortar hardens by drying. The deliberate judgment of those who knew him [A. Lincoln] has hardened into tradition. The Century.

A name given by soldiers and sailors to a kind of hard biscuit or sea bread.

ysical problems, involving arbitrary data, over a spherical surface, and the deduction of solutions for every point of space. The functions employed in this method are called spherical harmonic functions. Thomson & Tait. -- Harmonic suture (Anat.), an articulation by simple apposition of comparatively smooth surfaces…