\Plu"ral*ize\, v. t. [imp. & p. p. {Pluralized}; p.
pr. & vb. n. {Pluralizing}.]
1. To make plural by using the plural termination; to
   attribute plurality to; to express in the plural form.
2. To multiply; to make manifold. [R.]

\Plu"ral*ize\, v. i.
1. To take a plural; to assume a plural form; as, a noun
   pluralizes. --Earle.
2. (Eccl.) To hold more than one benefice at the same time.
   [Eng.]