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An interval containing an octave and a second.

cer. -- Now and then, at one time and another; indefinitely; occasionally; not often; at intervals. "A mead here, there a heath, and now and then a wood." Drayton. -- Now now, at this very instant; precisely now. [Obs.] "Why, even now now, at holding up of this finger, and before the turning down of this." J. Webster…

The eighth tone in the scale; the interval between one and eight of the scale, or any interval of equal length; an interval of five tones and two semitones.

whose office is to bring Twilight upon the earth. Milton. In this experiment the several intervals of the teeth of the comb do the office of so many prisms. Sir I. Newton.

A period of four years, by which the ancient Greeks reckoned time, being the interval from one celebration of the Olympic games to another, beginning with the victory of Coroebus in the foot race, which took place in the year 776 b.c.; as, the era of the olympiads.

pen harmony (Mus.), harmony the tones of which are widely dispersed, or separated by wide intervals. -- Open hawse (Naut.), a hawse in which the cables are parallel or slightly divergent. Cf. Foul hawse, under Hawse. -- Open hearth (Metal.), the shallow hearth of a reverberatory furnace. -- Open-hearth furnace, a re…

A plain strip or band, as of velvet or plush, placed at intervals lengthwise on the skirt of a dress, for ornament.

aight line. Rankine. (b) (Mus.) The ascending or descending of two or more parts at fixed intervals, as thirds or sixths. -- Parallel rod (Locomotive Eng.), a metal rod that connects the crank pins of two or more driving wheels; -- called also couping rod, in distinction from the connecting rod. See Illust. of Locomot…

The fit, attack, or exacerbation, of a disease that occurs at intervals, or has decided remissions or intermissions. Arbuthnot.

Hence: A stated and recurring interval of time; more generally, an interval of time specified or left indefinite; a certain series of years, months, days, or the like; a time; a cycle; an age; an epoch; as, the period of the Roman republic. How by art to make plants more lasting than their ordinary period. Bacon.…

ning regularly, after a certain period of time; acting, happening, or appearing, at fixed intervals; recurring; as, periodical epidemics. The periodic return of a plant's flowering. Henslow. To influence opinion through the periodical press. Courthope.

A magazine or other publication which appears at stated or regular intervals.

The interval between the diastole and systole of the heart. It is perceptible only in the dying.

Art of recording or measuring intervals of time by the photochronograph. -- Pho`to*chron`o*graph"ic (#), -graph"ic*al (#), a. -- -graph"ic*al*ly, adv.

-- Picket line. (Mil.) (a) A position held and guarded by small bodies of men placed at intervals. (b) A rope to which horses are secured when groomed. -- Picketpin, an iron pin for picketing horses.

ertainty or stability; uncertain; as, a precarious state of health; precarious fortunes. "Intervals of partial and precarious liberty." Macaulay.

In the construction of fieldworks, the erection at proper intervals of wooden profiles, to show to the workmen the sectional form of the parapets at those points.

nt fever which returns every fourth day, reckoning inclusively, that is, one in which the interval between paroxysms is two days.

To stitch or sew together at frequent intervals, in order to confine in place the several layers of cloth and wadding of which a garment, comforter, etc., may be made; as, to quilt a coat. Dryden.

An interval of a fifth; also, a part sung with such intervals. [Obs.] "He sang . . . a loud quynyble." Chaucer.