portmanteau word; blend word
A word formed by blending parts of two or more words, like パソコン (パーソナル + コンピューター). The term itself is a calque of 'portmanteau word'.
See also: 混成語
A 'portmanteau word' is a word made by combining two or more words.
'Blog' is a portmanteau of 'web' and 'log'.
Kanji spelling using 鞄 for 'bag'; less common but still seen.
Calque of English 'portmanteau word'. かばん (bag) + 語 (word), referring to the idea of packing multiple meanings into one word.