15-Letter Words Containing: D,R,O,G,H,E,R

• radiography using X-rays and xerographic (rather than roentgenographic) techniques

• equipment that enables a sophisticated separation, e.g. gas chromatographic or liquid chromatographic separation.

• a graphical image of the heart produced by an echocardiograph

• a long thin board with one edge thicker than the other; used as siding by lapping one board over the board below

• telegraphy that uses transmission by radio rather than by wire

• the use of radio to send telegraphic messages (usually by Morse code)

• To regulate the body temperature (by thermoregulation)