residual

Everyday

1. (formal) Left over after most of something has gone or been used. tree →
2. (noun, maths and science) An amount left over, or the difference between a real value and a predicted one. tree →
3. (noun) residuals: money paid to actors when a show is shown again. tree →

In the lessons

Formal word in science and exam problems: "residual water in the jug". In maths, it is like a remainder or what is left. Phrases: residual heat, residual amount, residual value.

Examples

• There was a residual smell of smoke in the room. tree →
• The oven gives off residual heat after it is switched off. tree →
• Pour away the residual water. tree →
• The residual amount after paying the bills was 40 dollars. tree →
• Some residual snow lay in the shade. tree →
• The cream left residual marks on the table. tree →

Note

Formal; plain words: leftover, remaining. Noun: residue (what is left behind). In a maths problem, "residual" means what is left after taking away, so subtract.