What is Intraday Trading

Definition : Intra Day Trading, as the name implies, the purchase and sale of a day's interval (intra) ie trading,
On the same day, if a stock or stock is purchased, the stock should be sold before the market closes, or if you do short sale, then after buying the stock after the market closure, close your open position, So that trading goes to Intraday Trading,
Intra Day Trading is also known by many other names -
E.g., Day Trading, MIS (Margin Intraday Square off).