HEPTANE n.
one of several isometric hydrocarbons, C7H16, of the paraffin series (nine are possible, four are known); -- so called because the molecule has seven carbon atoms. Specifically, a colorless liquid, found as a constituent of petroleum, in the tar oil of cannel coal, etc.
HIEROGLYPH; HIEROGLYPHIC n.
picture writing of the ancient Egyptian priests. It is made up of three, or, as some say, four classes of characters: first, the hieroglyphic proper, or figurative, in which the representation of the object conveys the idea of the object itself; second, the ideographic, consisting of symbols representing ideas, not sou…
HIGH n.
t card dealt or drawn. High, low, jack, and the game, a game at cards; -- also called all fours, old sledge, and seven up. -- In high and low, utterly; completely; in every respect. [Obs.] Chaucer. -- On high, aloft; above. The dayspring from on high hath visited us. Luke i. 78. -- The Most High, the Supreme Being; G…
HINGE n.
One of the four cardinal points, east, west, north, or south. [R.] When the moon is in the hinge at East. Creech. Nor slept the winds . . . but rushed abroad. Milton. Hinge joint. (a) (Anat.) See Ginglymus. (b) (Mech.) Any joint resembling a hinge, by which two pieces are connected so as to permit relative turning in o…
HOMER n.
uarts, one pint; and, as a dry measure, ten ephahs, equivalent to six bushels, two pecks, four quarts. [Written also chomer, gomer.]
HOOP n.
An old measure of capacity, variously estimated at from one to four pecks. [Eng.] Halliwell. Bulge hoop, Chine hoop, Quarter hoop, the hoop nearest the middle of a cask, that nearest the end, and the intermediate hoop between these two, respectively. -- Flat hoop, a wooden hoop dressed flat on both sides. -- Half-rou…