Definitions

1. noun

the part of a curve that turns upward

“The upcurve of the new roller coaster was a thrilling experience for the riders.”

2. verb

to cause to turn upward in a curve

“The engineer worked to upcurve the track to improve the train’s speed.”

3. verb

to show a gradual improvement

“The economy has been upcurving since the new policies were implemented.”