synthesiser

"The violinist was a master of her instrument."

"My computer's motherboard is broken, so I can't use it to do my homework. "

"The teacher's explanation had a clear reference to the textbook. "

"The electronic configuration of atoms is important in chemistry class. "

"Electronics is a popular subject."

"Public relations firms often serve as the interface between a company and the press."

"The discussion generated an uproar."

"to respond to a question or an argument"

"The gentle oscillation of the fan blades cooled the room. "

"The radio in the classroom used an oscillator to produce a stable, consistent signal for the students' listening activity. "

"With a simple remote, he could control the toy truck."

"The astronauts boarded the spaceship for their journey to the moon. "