an apparatus, system, or process for transmission of sound or speech to a distant point, especially by an electric device.

a written account of another person's life

an optical instrument for making distant objects appear larger and therefore nearer

a picture produced by photography.

an electromagnetic wave of extremely high frequency

a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end.

one 100th of a meter, equivalent to 0.3937 inch

an optical instrument having a magnifying lens 

a person's own signature:

an apparatus, system, or process for transmitting messages or signals

chip1(def 5).

Audio. a headset designed for use with a stereo system

the border or outer boundary of a two-dimensional figure

a method of teaching reading and spelling based upon the phonetic interpretation of ordinary spelling.

an instrument capable of transforming sound waves into changes in electric currents or voltage, used in recording or transmitting sound.