An increase in the number of outstanding shares of a corporation without changing the shareholders' equity(noun)
WordNet. Princeton University. 2010.
Use "stock split" in a sentence
"Aunt Sadie may have paid $10 for a share of Acme Inc. way back when, but its basis will be one-fifth of that after a five-for-one stock split leaves her with five shares for her initial one, explains Stevie Conlon , senior director and tax counsel at Wolters Kluwer Financial Services."