noun
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
「かばん語」とは、二つ以上の語を組み合わせて作られた語のことです。
A 'portmanteau word' is a word made by combining two or more words.
「ブログ」は「ウェブ」と「ログ」のかばん語です。
'Blog' is a portmanteau of 'web' and 'log'.
混成語 is a broader term for any blended or hybrid word, while かばん語 specifically refers to portmanteau words formed by fusing parts of existing words.
Calque of English 'portmanteau word'. かばん (bag) + 語 (word), referring to the idea of packing multiple meanings into one word.