frankenword
noun
°A word formed by combining two (or more) other words; a portmanteau.
"{{quote-news|year=2005|date=December 15|title=Know some good frankenwords?|author=Ruma Singh|work=Bangalore Times|url=http://timesofindia.indiatimes.com/city/bangalore-times/Know-some-good-frankenwords/articleshow/1333634.cms"
synonyms: blend, portmanteau, portmanteau word