1.AdjectiveDescribing a pension plan in which the members do not provide their own direct contributions (that is, the employer makes all monetary contributions; the employees make no monetary contributions, whereas their service toward the company's ability to operate is their indirect contribution, for which the pension is remuneration).
2.AdjectiveNot being a contributing factor (to a decision, analysis, or situation), such as not contributing to a medical diagnosis.
"Although medical history is always relevant to diagnosis, it is sometimes noncontributory, shedding no light on possible causes of symptoms."