Definition of “investment” - Learner’s Dictionary

investment

noun uk us /ɪnˈvestmənt/
MONEY [ C, U ]

B2 the money that you put in a bank, business, etc in order to make a profit, or the act of doing this:

Businesses need to increase their investment in new technology.
FOR THE FUTURE [ C ]

B2 something that you do or have, in order to have more in the future:

Going to college is an investment in the future.

(Definition of “investment” from the Cambridge Learner's Dictionary © Cambridge University Press)