desexualize
     v 1: direct one's libidinous urges into another direction [syn: {desexualise}]
     2: make infertile; "in some countries, people with genetically
        transmissible disbilites are sterilized" [syn: {sterilize},
         {sterilise}, {desex}, {unsex}, {desexualise}, {fix}]
Source: WordNet® 2.0