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The doctrine of refracted sound; diacoustics.

h of which is the octave of the first. Diatonic scale (Mus.), a scale consisting of eight sounds with seven intervals, of which two are semitones and five are whole tones; a modern major or minor scale, as distinguished from the chromatic scale.

A telephonic instrument for office or other similar use, having a sound-magnifying device enabling the ordinary mouthpiece to be dispensed with. Much use has been made of it for overhearing, or for recording, conversations for the purpose of obtaining evidence for use in litigation.

Having the digamma or its representative letter or sound; as, the Latin word vis is a digammated form of the Greek . Andrews.

Two signs or characters combined to express a single articulated sound; as ea in head, or th in bath.

Not bright or distinct; wanting luminousness or clearness; obscure in luster or sound; dusky; darkish; obscure; indistinct; overcast; tarnished. The dim magnificence of poetry. Whewell. How is the gold become dim! Lam. iv. 1. I never saw The heavens so dim by day. Shak. Three sleepless nights I passed in sounding on, T…

Loud, confused, harsh noise; a loud, continuous, rattling or clanging sound; clamor; roar. Think you a little din can daunt mine ears Shak. He knew the battle's din afar. Sir W. Scott. The dust and din and steam of town. Tennyson.

To cause to sound or ring. To ding (anything) in one's ears, to impress one by noisy repetition, as if by hammering.

The sound of, or as of, repeated strokes on a metallic body, as a bell; a repeated and monotonous sound.

me through the brain a phonetic expression; -- jocosely so called from the analogy of the sound of a bell induced by the stroke of the clapper.

A coalition or union of two vowel sounds pronounced in one syllable; as, ou in out, oi in noise; -- called a proper diphthong.

ove by corrective and penal methods; to chastise; to correct. Has he disciplined Aufidius soundly Shak.

Union of musical sounds which strikes the ear harshly or disagreeably, owing to the incommensurability of the vibrations which they produce; want of musical concord or harmony; a chord demanding resolution into a concord. For a discord itself is but a harshness of divers sounds mBacon. Apple of discord. See under Apple…

Dissonant; not in harmony or musical concord; harsh; jarring; as, discordant notes or sounds. For still their music seemed to start Discordant echoes in each heart. Longfellow.

A mingling of discordant sounds; an inharmonious combination of sounds; discord. Filled the air with barbarous dissonance. Milton.

Sounding harshly; discordant; unharmonious. With clamor of voices dissonant and loud. Longfellow.

n of terms or logical division of a subject with regard to difference; as, to distinguish sounds into high and low. Moses distinguished the causes of the flood into those that belong to the heavens, and those that belong to the earth. T. Burnet.

To strike or sound through. [R.] Davies (Holy Roode).

A sounding through.

Multiplicity of difference; multiformity; variety. "Diversity of sounds." Shak. "Diversities of opinion." Secker.