usefulinvention

noun
UK /ˈjuːsfəl ɪnˈvɛnʃən/
US /ˈjusfəl ɪnˈvɛnʃən/

A useful invention is a new thing that helps people do something.

The wheel was a useful invention that made it easier to move things.

SYNONYMS

helpful creationpractical devicehandy innovationvaluable tool

RELATED WORDS

inventordiscoverygadgetmachinetechnology

OTHER MEANINGS

2. A tool or device that makes a job easier.

The washing machine is a useful invention for cleaning clothes.

3. A clever idea that solves a problem.

Sticky notes were a useful invention for marking pages.

4. Something new that saves time or effort.

The calculator is a useful invention for doing math quickly.