A softwood which most resembles the hardwoods and is good for construction, since it gets harder with age without darkening. This straight grain, long fiber wood is lightweight, free of gum and pitch and holds nails well.
Henry
A unit of electrical inductance, equal to the inductance of a circuit in which the variation of current at the rate of one ampere per second induces an electromotive force of one volt.
Heptagon
A plane figure with seven angles and seven sides.
Heptahedron
A solid figure with seven plane surfaces.
Herb
A plant grown for flavoring, scented foliage or medicinal purposes.
Herbaceous
Describes a plant with soft rather than woody tissues.
Herbarium
A collection of dried specimens and a research center. It is a special kind of museum.
Hereditatments
Property, real estate or personal, tangible or intangible, which may be inherited.
Hermaphrodite caliper
Caliper, with one straight leg and one leg bent inward on the end, which is used to mark lines which are parallel to the surface and also for finding the center of a circle.
Hermetic
Completely sealed, especially against the escape or entry of air.
