Defn: Any device for producing electric oscillations; esp., an apparatus for generating electric waves in a system of wireless telegraphy. (b) (Mech.) An instrument for measuring rigidity by the torsional oscillations of a weighted wire.

OSCILLATORIA
Os`cil*la*to"ri*a, n. pl. Etym: [NL. See Oscillatory.] (Bot.)

Defn: Same as Oscillaria.

OSCILLATORY
Os"cil*la*to*ry, a. Etym: [Cf. F. oscillatoire. See Oscillate.]

Defn: Moving, or characterized by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion.

OSCILLOGRAM
Os"cil*lo*gram, n. [L. oscillare + -gram.] (Elec.)

Defn: An autographic record made by an oscillograph.

OSCILLOGRAPH
Os"cil*lo*graph, n. [L. oscillare to swing + -graph.] (Elec.)

Defn: An apparatus for recording or indicating alternating-current wave forms or other electrical oscillations, usually consisting of a galvanometer with strong field, in which the mass of the moving part is very small and frequency of vibration very high. — Os`cil*lo*graph"ic (#), a.

OSCILLOMETER
Os`cil*lom"e*ter, n. [L. oscillare to swing + -meter.]