a. (Physics) Pertaining to, or causing the production of, sound by means of the actinic, or ultraviolet, rays; as, actinophonic phenomena. [ Webster 1913 Suppl. ]

adj. 1. of or pertaining to an allophone. [ WordNet 1.5 ]

a. Antiphonal. [ 1913 Webster ]

{ } a. Without voice; voiceless; nonvocal; incapable of all but whispered speech. [ 1913 Webster + WordNet 1.5 ]

{ , a. Harsh-sounding. [ 1913 Webster ]

a. Of or relating to cataphonics; catacoustic. [ 1913 Webster ]

n. [ Pref. cata + phonic: cf. F. cataphonique. ] (Physics) That branch of acoustics which treats of reflected sounds; catacoustics. [ 1913 Webster ]

{ , a. [ Gr. dia` through + &unr_; sound, tone. ] Diacoustic. [ 1913 Webster ]

n. The doctrine of refracted sound; diacoustics. [ 1913 Webster ]

a. Belonging to, or resembling, egophony. [ 1913 Webster ]

{ } a. Pertaining to, or exhibiting, euphony; agreeable in sound; pleasing to the ear; euphonious; as, a euphonic expression; euphonical orthography. [ 1913 Webster ]

n. [ See Euphony. ] (Mus.) A kind of upright piano. [ 1913 Webster ]

prop. a. Able to communicate in the French language; -- used especially of those whose native language is French.
Syn. -- French-speaking. [ PJC ]

{ } a. [ Gr. &unr_;; &unr_; the same + &unr_; sound, tone: cf. F. homophone. ] 1. (Mus.) (a) Originally, sounding alike; of the same pitch; unisonous; monodic. (b) Now used for plain harmony, note against note, as opposed to polyphonic harmony, in which the several parts move independently, each with its own melody. [ 1913 Webster ]

2. Expressing the same sound by a different combination of letters; as, bay and bey. [ 1913 Webster ]

a. Of or pertaining to a microphone; serving to intensify weak sounds. [ Webster 1913 Suppl. ]

n. [ See Microphone. ] The science which treats of the means of increasing the intensity of low or weak sounds, or of the microphone. [ 1913 Webster ]

a. [ Mono- + Gr. &unr_; a voice. ] 1. (Mus.) Single-voiced; having but one part; as, a monophonic composition; -- opposed to polyphonic. [ 1913 Webster ]

2. Of or relating to a system for recording and reproducing sound, which has only one sound channel; also called monaural or mono. It contrasts with stereophonic (or stereo), quadraphonic, or surround-sound, which have two or more channels, and can thus reproduce the effect of the sound coming from more than one direction. [ PJC ]

a. [ Gr. fwnh` sound: cf. F. phonique. ] Of or pertaining to sound; of the nature of sound; acoustic. Tyndall. [ 1913 Webster ]

n. 1. Same as Phonetics. [ 1913 Webster ]

2. A method of teaching reading and spelling to beginning students, emphasizing the sound values of individual letters and syllables, and the relationship between pronunciation and spelling. Contrasted to whole language method and sentence method. [ PJC ]

a. [ Phosphoric + sulphonic. ] (Chem.) Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical with the phosphorus directly bonded to a carbon, and analogous to the sulphonic acids; as, methanephosphonic acid, CH3.PO.(OH)2. [ 1913 Webster + PJC ]

a. Of or pertaining to photophone. [ 1913 Webster ]

a. [ Gr. &unr_;; poly`s many + &unr_; sound: cf. F. polyphone. ] 1. Having a multiplicity of sounds. [ 1913 Webster ]

2. Characterized by polyphony; as, Assyrian polyphonic characters. [ 1913 Webster ]

3. (Mus.) Consisting of several tone series, or melodic parts, progressing simultaneously according to the laws of counterpoint; contrapuntal; as, a polyphonic composition; -- opposed to homophonic, or monodic. [ 1913 Webster ]

a. Of or pertaining to a siphon. [ 1913 Webster ]

a. [ Gr. &unr_; Stentor + &unr_; a sound, voice. See Stentor. ] Speaking or sounding very loud; stentorian. [ Obs. ] [ 1913 Webster ]

Of this stentorophonic horn of Alexander there is a preserved in the Vatican. Derham. [ 1913 Webster ]

a. (Chem.) Pertaining to, or derived from, a sulphone; -- used specifically to designate any one of a series of acids (regarded as acid ethereal salts of sulphurous acid) obtained by the oxidation of the mercaptans, or by treating sulphuric acid with certain aromatic bases (as benzene); as, phenyl sulphonic acid, C6H5.SO2.OH, a stable colorless crystalline substance. [ 1913 Webster ]

Sulphonic group (Chem.), the hypothetical radical, SO2.OH, the characteristic residue of sulphonic acids. [ 1913 Webster ]

a. 1. Symphonious. [ 1913 Webster ]

2. (Mus.) Relating to, or in the manner of, symphony; as, the symphonic form or style of composition. [ 1913 Webster ]

a. Pertaining to, or characterized by, tautophony; repeating the same sound. [ 1913 Webster ]

a. [ Cf. F. téléphonique. See Telephone. ] 1. Conveying sound to a great distance. [ 1913 Webster ]

2. Of or pertaining to the telephone; by the telephone. [ 1913 Webster ]

adv. By telephonic means or processes; by the use of the telephone. [ 1913 Webster ]