There's a small, recent scholarly literature on this in computational linguistics, referring to these as "lexical blends". This journal article is the most prom

There's a small, recent scholarly literature on this in computational linguistics, referring to these as "lexical blends". This journal article is the most prominent publication, I believe: http://www.mitpressjournals.org/doi/abs/10.1162/coli.2010.36.1.36104 http://www.mitpressjournals.org/doi/abs/10.1162/coli.2010.36... . The first author, Paul Cook, did a dissertation on them.