It is

來源: 於 2023-12-28 10:41:32 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

from a French verb "fondre", melt by meaning.

Its past participle is fondu,

by adding an "e",

it becomes a feminine name.

Check the word "fondue" in history:

on page 1043 in The Compact Edition of the Oxford English Dictionary.