English definition of “realize”
realize (also UK -ise)
/ˈrɪəlaɪz/ verb [T]
NOTICE › to notice or understand something that you did not notice or understand before: [+ question word] I didn't realize how unhappy she was. I suddenly realized I'd met him before. [+ (that)] Some people just don't seem to realize that the world has changed.
realize an ambition/dream/goal, etc › to achieve something that you have wanted for a long time: He had realized all his ambitions by the age of 30.
SELL › to sell things that you own: to realize your assets
MAKE MONEY › to be sold for a particular amount of money: The shares realized £1.4 million.