"Earnable compensation" means the full rate of regular compensation payable to a member employee for his full normal working time, excluding any supplements from local funds. In cases where compensation includes maintenance, the board of trustees shall fix the value of [...]

"Earnable compensation" means the full rate of regular compensation payable to a member for his full normal working time and includes compensation paid to a member by an employer from grants or contracts made by outside agencies with the employer. All moneys paid by an [...]

"Earnable compensation" means the full rate of regular compensation payable to a participating employee for the employee's normal working time and includes compensation paid to the employee by an employer from grants or contracts made by outside agencies with the employer [...]