Defined Contribution Plan A retirement plan which provides for an individual account for each participant and for benefits based solely on the amount contributed to the participant's account, and any income, expenses, gains and losses, and any forfeitures of accounts of other participants which the plan may allocate to such participant's account. The Advisory Committee must treat all defined contribution plans (whether or not terminated) maintained by the Employer as a single plan. Solely for purposes of the limitations of Part 2 of this Article III, the Advisory Committee will treat employee contributions made to a defined benefit plan maintained by the Employer as a separate defined contribution plan. The Advisory Committee also will treat as a defined contribution plan an individual medical account (as defined in Code Section 415(l)(2)) included as part of a defined benefit plan maintained by the Employer and, for taxable years ending after December 31, 1985, a welfare benefit fund under Code Section 419(e) maintained by the Employer to the extent there are post-retirement medical benefits allocated to the separate account of a key employee (as defined in Code Section 419A(d)(3)).