also: そのかん
noun, adverb
in the meanwhile; during that time
Refers to the period between two events or throughout a specified time. Can be used as a noun or adverbially.
その間、彼は一言も話さなかった。
During that time, he didn't say a word.
会議のその間、ずっとメモを取っていた。
I was taking notes the whole time during the meeting.
Compound of その (that) and 間 (interval, time). The reading そのかん uses the on'yomi of 間 and is more formal.