[ adjective ] increasing in length
"the lengthening days of February"
Used in print(Organic Gardening and Farming,...)
In response to the lengthening days of February they budded , then bloomed their 4 - inch velvety flowers .
[ noun ] the act of prolonging something
"there was an indefinite prolongation of the peace talks"
Used in print(The New York Times,...)
However , this would require a lengthening of the season from thirteen to fourteen weeks .