Definition of "Delta"

Definition of "Delta": Delta is the amount by which an option's price will change for a corresponding one point change in price by the underlying entity.唔明呀?我都唔明，不過老細就話，delta可以睇成係我地現有既options 相對而家既market 黎講等如有d咩futures in hand.
Anyway,我唔知有邊個明啦。都我都可以get到少少既。如果係咁以後mon住個市就會易d啦。起碼都知要講d咩比老細聽嘛。大佬，一個人mon 7隻commodities，你估真係易架~