Residual/rɪˈzɪdʒuəl/ Definition 1 of 5Pro Tip 1/2Common Pairings Learn collocations to use 'residual' accurately in sentences. The scientist discussed the residual effects of the experiment. Pro Tip 2/2Conceptual Understanding Understand 'residual' as part of something larger that remains. After the festival, the residual excitement could still be felt in the air.