What is "economised"

Usage examples of "economised".

Had I remained in office as President of the Grand Trunk, undoubtedly I should have laboured hard to bring about such a consummation, which undoubtedly would have economised capital and hastened the completion of the great Interoceanic work.

As for clothes, she had enough to last her till the end of her days, and she economised on the light by going to bed at dusk.

This vacuum economised the graphite points between which the luminous arc was developed—an important point of economy for Captain Nemo, who could not easily have replaced them.