HEPTANE n.
Any 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.
HICKORY n.
An American tree of the genus Carya, of which there are several species. The shagbark is the C. alba, and has a very rough bark; it affords the hickory nut of the markets. The pignut, or brown hickory, is the C. glabra. The swamp hickory is C. amara, having a nut whose shell is very thin and the kernel bitter. Hickory…
HILL n.
nd America, which makes mounds or ant-hills over its nests. -- Hill myna (Zoöl.), one of several species of birds of India, of the genus Gracula, and allied to the starlings. They are easily taught to speak many words. [Written also hill mynah.] See Myna. -- Hill partridge (Zoöl.), a partridge of the genus Aborophila…