plu·ral·ize 
(plrə-līz′)
(plrə-līz′)v. plu·ral·ized, plu·ral·iz·ing, plu·ral·iz·es
v.tr.
1. To make plural.
2. Grammar To express in the plural.
v.intr.
1. To become plural.
2. Ecclesiastical To hold more than one position or benefice at one time.
plu′ral·i·zation (plr′ə-lĭ-zāshən) n.