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elementary substance which forms one of the constituents of didymium. Symbol Nd. Atomic weight 140.8.

erings, wraps, etc.; free from charges, deductions, etc; as, net profit; net income; net weight, etc. [Less properly written nett.] Net tonnage (Naut.), the tonnage of a vessel after a deduction from the gross tonnage has been made, to allow space for crew, machinery, etc.

ch, mostly limestones, are extensively distributed, and at Niagara Falls consist of about eighty feet of shale supporting a greater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology.

the mineral niccolite, and with arsenic and sulphur in nickel glance. Symbol Ni. Atomic weight 58.6.

ervous troubles, and characterized by a sense of extreme uneasiness or discomfort (as of weight on the chest or stomach, impossibility of motion or speech, etc.), or by frightful or oppressive dreams, from which one wakes after extreme anxiety, in a troubled state of mind; incubus. Dunglison.

Eight and one more; one less than ten; as, nine miles. Nine men's morris. See Morris. -- Nine points circle (Geom.), a circle so related to any given triangle as to pass through the three points in which the perpendiculars from the angles of the triangle upon the opposite sides (or the sides produced) meet the sides.…

Nine times twenty, or one hundred and eighty. -- n.

Nine and ten; eighteen and one more; one less than twenty; as, nineteen months.

Following the eighteenth and preceding the twentieth; coming after eighteen others.

Next in order after the eighty-ninth.

Nine times ten; eighty-nine and one more; as, ninety men.

Following the eight and preceding the tenth; coming after eight others.

is a constituent of all organized living tissues, animal or vegetable. Symbol N. Atomic weight 14. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of Paris, and Pictet of Geneva.

The wakeful bird . . . tunes her nocturnal note. Milton. That note of revolt against the eighteenth century, which we detect in Goethe, was struck by Winckelmann. W. Pater.

Writing paper, not exceeding in size, when folded once, five by eight inches.

aining to a fair, or to a market day. Nundinal letter, among the Romans, one of the first eight letters of the alphabet, which were repeated successively from the first to the last day of the year. One of these always expressed the market day, which returned every nine days (every eight days by our reckoning).…

A weight of twelve grains; or, according to some, of ten grains, or half a scruple. [Written also obol.]

An ancient weight, the sixth part of a drachm.

A prefix meaning eight. See Octo-.

An instrument of eight strings; a system of eight tones. [Also written octochord.]