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Of or pertaining to a siphon.

Speaking or sounding very loud; stentorian. [Obs.] Of this stentorophonic horn of Alexander there is a preserved in the Vatican. Derham.

ns, or by treating sulphuric acid with certain aromatic bases (as benzene); as, phenyl sulphonic acid, C6H5.SO2.OH, a stable colorless crystalline substance. Sulphonic group (Chem.), the hypothetical radical, SO2.OH, the characteristic residue of sulphonic acids.

Relating to, or in the manner of, symphony; as, the symphonic form or style of composition.

Pertaining to, or characterized by, tautophony; repeating the same sound.

Conveying sound to a great distance.

By telephonic means or processes; by the use of the telephone.

A self-restoring coherer, as a microphonic detector.

A euphonic form of the prefix Bi-.

cellular telephone, a portable radio- telephone transmitting and receiving the radio-telephonic signals from one of a group of transmitter-receiver stations so arranged that they provide adequate signal contact for such telephones over a certain geographical area. The area within which one transmitter may service such…

A composition (usually in symphonic form with three movements) in which one instrument (or two or three) stands out in bold relief against the orchestra, or accompaniment, so as to display its qualities or the performer's skill.

Music in parts; part writing; harmony; polyphonic music. See Polyphony. Counterpoint, an invention equivalent to a new creation of music. Whewell.

yestuffs of artificial production and complex structure. In general they are diazo and sulphonic acid derivatives of benzene and naphthol.

e properties of sound as affected by passing through different mediums; -- called also diaphonics. See the Note under Acoustics.

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.

The sodium salt of a sulphonic acid of a naphthol, C10H5(OH)(NH2)SO3Na used as a developer.

Pleasing or sweet in sound; euphonic; smooth-sounding. Hallam. -- Eu*pho"ni*ous*ly, adv.

To make euphonic. [R.]

an acid so called. Euthiochroic acid (Chem.), a complex derivative of hydroquinone and sulphonic (thionic) acid. -- so called because it contains sulphur, and forms brilliantly colored (yellow) salts.

A polyphonic composition, developed from a given theme or themes, according to strict contrapuntal rules. The theme is first given out by one voice or part, and then, while that pursues its way, it is repeated by another at the interval of a fifth or fourth, and so on, until all the parts have answered one by one, cont…