The Collaborative International Dictionary of English v.0.48:

Mahometanize \Ma*hom"et*an*ize\, v. t. [imp. & p. p.
   Mahometanized; p. pr. & vb. n. Mahometanizing.]
   To convert to the religion of Mohammed; to Mohammedanize.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mohammedanize \Mo*ham"med*an*ize\, Mohammedize \Mo*ham"med*ize\
,  prop. v. t.
   To make conformable to the principles, or customs and rites,
   of Mohammedanism. [Written also Mahometanize.]
   [1913 Webster]