GREGORIAN a.
(Opt.), a form of reflecting telescope, named from Prof. James Gregory, of Edinburgh, who perfected it in 1663. A small concave mirror in the axis of this telescope, having its focus coincident with that of the large reflector, transmits the light received from the latter back through a hole in its center to the eyepie…
HALF a.
efinite portion resembling a half; approximately a half, whether more or less; partial; imperfect; as, a half dream; half knowledge. Assumed from thence a half consent. Tennyson. Half ape (Zoöl.), a lemur. -- Half back. (Football) See under 2d Back. -- Half bent, the first notch, for the sear point to enter, in the t…
HAND n.
To put the last, or finishing, hand to, to make the last corrections in; to complete; to perfect. -- To set the hand to, to engage in; to undertake. That the Lord thy God may bless thee in all that thou settest thine hand to. Deut. xxiii. 20. -- To stand one in hand, to concern or affect one. -- To strike hands, to…
HERMETIC; HERMETICAL a.
Made perfectly close or air-tight by fusion, so that no gas or spirit can enter or escape; as, an hermetic seal. See Note under Hermetically. Hermetic art, alchemy. -- Hermetic books. (a) Books of the Egyptians, which treat of astrology. (b) Books which treat of universal principles, of the nature and orders of celest…
HISTORY n.
h is history composed from personal experience, observation, and memory. Histories are as perfect as the historian is wise, and is gifted with an eye and a soul. Carlyle. For aught that I could ever read, Could ever hear by tale or history. Shak. What histories of toil could I declare! Pope. History piece, a representa…