pro·le·tar·i·an 
(prō′lĭ-târē-ən)
(prō′lĭ-târē-ən)adj.
Of, relating to, or characteristic of the proletariat.
n.
A member of the proletariat; a worker.
[From Latin prōlētārius, belonging to the lowest class of Roman citizens (viewed as contributing to the state only through having children), from prōlēs, offspring; see al-2 in the Appendix of Indo-European roots.]
pro′le·tari·an·ism n.