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tions of the times at which the stars cross the inner or outer periphery of the ring. -- Double image micrometer, a micrometer in which two images of an object are formed in the field, usually by the two halves of a bisected lens which are movable along their line of section by a screw, and distances are determined by…

made in imitation of velvet; -- probably the same as mock velvet. [Obs.] Our rich mockado doublet. Ford.

rismatic body of a transverse section equal to a given unit, as a square inch or foot, to double, or to compress it to half, its original length, were that degree of elongation or compression possible, or within the limits of elasticity; -- called also Young's modulus. -- Modulus of rupture, the measure of the force n…

A form of double monster, in which two individuals are united by a common umbilicus.

Many times doubled; manifold; numerous.

y, or of more than one; multiple; multifold. Multiplicate flower (Bot.), a flower that is double, or has an unusual number of petals in consequence of the abnormal multiplication of the parts of the floral whorls.

or displeasure; to mutter. Peace, you mumbling fool. Shak. A wrinkled hag, with age grown double, Picking dry sticks, and mumbling to herself. Otway.

[Obs.] "Conscience" is a Latin word, and, according to the very notation of it, imports a double or joint knowledge. South.

of tone, somewhat like the clarinet in form, but more slender, and sounded by means of a double reed; a hautboy. Oboe d'amore Etym: [It., lit., oboe of love], and Oboe di caccia Etym: [It., lit., oboe of the chase], are names of obsolete modifications of the oboe, often found in the scores of Bach and Handel.…

h; a stanza of eight lines. With mournful melody it continued this octave. Sir P. Sidney. Double octave. (Mus.) See under Double. -- Octave flute (Mus.), a small flute, the tones of which range an octave higher than those of the German or ordinary flute; -- called also piccolo. See Piccolo.

ls. -- Opera glass, a short telescope with concave eye lenses of low power, usually made double, that is, with a tube and set of glasses for each eye; a lorgnette; -- so called because adapted for use at the opera, theater, etc. -- Opera hat, a gentleman's folding hat. -- Opera house, specifically, a theater devoted…

istinctly seen. (b) The line in a doubly refracting crystal, in the direction of which no double refraction occurs. A uniaxial crystal has one such line, a biaxial crystal has two. -- Optical circle (Opt.), a graduated circle used for the measurement of angles in optical experiments. -- Optical square, a surveyor's i…

A kind of double thrown silk of very fine texture, that is, silk twisted like a rope with different strands, so as to increase its strength.

eom.) See Osculating circle of a curve, under Circle. -- Osculatory plane (to a curve of double curvature), a plane which passes through three successive points of the curve. -- Osculatory sphere (to a line of double curvature), a sphere passing through four consecutive points of the curve.

The excess. [Obs.] The overdeal in the price will be double. Holland.

substance, resembling oxanilamide, obtained by heating aniline oxalate, and regarded as a double anilide of oxalic acid; -- called also diphenyl oxamide.

A kind of doublet; a jacket. [Obs.] Piers Plowman.

A size of type between great primer and double pica. See the Note under Type.

A double sling made of a single rope, for slinging a cask, gun, etc.

f a vessel under sail. -- To pay on. Etym: [Etymol. uncertain.] To beat with vigor; to redouble blows. [Colloq.] -- To pay round Etym: [Etymol. uncertain.] (Naut.) To turn the ship's head.