INTERVAL. A space of time between two periods. When a person is unable to perform an act at any two given periods, but in the interval he has performed such act, as when a man is found to be insane in the months of January and March, and he enters into a contract or makes a will in the interval, in February, he will be presumed to have been insane at that time; and the onus will lie to show his sanity, on the person who affirms such act. See Lucid interval.

Source: Bouvier's Law Dictionary, Revised 6th Ed (1856)
 

Interval \In"ter*val\, n. [L. intervallum; inter between + vallum a wall: cf. F. intervalle. See Wall.]

[1913 Webster]

1. A space between things; a void space intervening between any two objects; as, an interval between two houses or hills. [1913 Webster]

'Twixt host and host but narrow space was left, A dreadful interval. --Milton. [1913 Webster]

2. Space of time between any two points or events; as, the interval between the death of Charles I. of England, and the accession of Charles II. [1913 Webster]

3. A brief space of time between the recurrence of similar conditions or states; as, the interval between paroxysms of pain; intervals of sanity or delirium. [1913 Webster]

4. (Mus.) Difference in pitch between any two tones. [1913 Webster]

At intervals, coming or happening with intervals between; now and then. "And Miriam watch'd and dozed at intervals." --Tennyson.

Augmented interval (Mus.), an interval increased by half a step or half a tone. Interval

Source: The Collaborative International Dictionary of English v.0.48
 

Interval \In"ter*val\, Intervale \In"ter*vale\, n. A tract of low ground between hills, or along the banks of a stream, usually alluvial land, enriched by the overflowings of the river, or by fertilizing deposits of earth from the adjacent hills. Cf. Bottom, n., 7. [Local, U. S.]

[1913 Webster]

The woody intervale just beyond the marshy land. --The Century. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

185 Moby Thesaurus words for "interval": abeyance, amount, aperture, arrearage, breach, break, broaching, caesura, caliber, cavity, cease-fire, cessation, chasm, check, clearing, cleft, coffee break, comma, compass, consecutive intervals, crack, cut, day, day off, defalcation, defect, deficiency, deficit, degree, delay, diapason, diatessaron, diatonic interval, diatonic semitone, disclosure, discontinuity, distance, downtime, drop, enharmonic diesis, enharmonic interval, extent, fateful moment, fenestra, fifth, fissure, fistula, fontanel, foramen, fourth, gap, gape, gat, grade, gulf, half step, half time, half-time intermission, halftone, height, hesitation, hiatus, hole, holiday, hollow, hour, inlet, instant, interim, interlude, intermezzo, intermission, intermittence, interregnum, interruption, interstice, juncture, kairos, lack, lacuna, lapse, laying open, layoff, leak, leap, less semitone, letup, level, lull, mark, meantime, meanwhile, measure, melodic interval, minute, missing link, moment, moment of truth, need, notch, note, nuance, octave, off-time, omission, opening, opening up, orifice, outage, outlet, parallel octaves, parenthesis, pas, passageway, pause, peg, period, pitch, plane, plateau, point, point of repose, pore, pregnant moment, proportion, psychological moment, quiet spell, range, ratio, reach, recess, relief, remission, remove, respite, rest, resting point, round, rung, scale, scope, season, second, semitone, seventh, shade, shadow, shortage, sixth, slot, space, span, spell, split, stage, stair, stand-down, standard, stay, step, stint, stoma, stretch, suspension, third, throwing open, time, time lag, time off, time out, tone, tread, truce, ullage, uncorking, unison interval, unstopping, vacation, void, wait, want, wantage, while, whole step, yawn

Source: Moby Thesaurus II by Grady Ward, 1.0
 

interval

Source: WordNet (r) 2.0
 

Interval \In"ter*val\, n. [L. intervallum; inter between + vallum a wall: cf. F. intervalle. See Wall.]

1. A space between things; a void space intervening between any two objects; as, an interval between two houses or hills.

'Twixt host and host but narrow space was left, A dreadful interval. --Milton.

2. Space of time between any two points or events; as, the interval between the death of Charles I. of England, and the accession of Charles II.

3. A brief space of time between the recurrence of similar conditions or states; as, the interval between paroxysms of pain; intervals of sanity or delirium.

4. (Mus.) Difference in pitch between any two tones.

At intervals, coming or happening with intervals between; now and then. ``And Miriam watch'd and dozed at intervals.'' --Tennyson.

Augmented interval (Mus.), an interval increased by half a step or half a tone.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Interval \In"ter*val\, Intervale \In"ter*vale\, n. A tract of low ground between hills, or along the banks of a stream, usually alluvial land, enriched by the overflowings of the river, or by fertilizing deposits of earth from the adjacent hills. Cf. Bottom, n., 7. [Local, U. S.]

The woody intervale just beyond the marshy land. --The Century.

Source: Webster's Revised Unabridged Dictionary (1913)