The term 'Payout Determinant' refers to a job that involves calculating the ODDS of a particular outcome. The crossword solution for this term is 'ODDS', which is a four-letter word. This term is commonly used in gambling, where the payout is determined by the ODDS of a particular outcome occurring. It is also used in other areas such as insurance and investments, where the payout is determined by the likelihood of a certain event occurring.