Working Name
Tentative Name
noun, verbal noun
A temporary title is what you give something when you don't have a final title for it. it's a working name or a tentative name.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
この建設中のショッピングモールの仮称知ってる？
Do you know the tentative name of this shopping mall under construction?
タイトルはまだ単なる仮称です。
The title is just a temporary name for now.
トーフグが仮称だったなんて、びっくりだよ。
I was surprised to learn that Tofugu was just a working name.