An efficiency curve can be obtained by plotting the efficiency at various energies.

They will not suspect him of plotting, not at his age.

You do enough plotting at the office.

But with some games, like chess, a human opponent can plot countermoves at his or her terminal.

After a moment, her face cleared, and Margaret was certain she was plotting at something again.

"The only reason I ask is so I don't have to plot a new course at the last minute."

To plot their strategy against their enemies at home.

The tyrant was plotting his next move at his mressawood table.

One of them had to be in plotting at all times, to insure they didn't really get hit by an asteroid.