jehovahtsidkenu

from Easton's 1897 Bible Dictionary

Jehovah-tsidkenu
Jehovah our rightousness, rendered in the Authorized Version,
"The LORD our righteousness," a title given to the Messiah (Jer.
23:6, marg.), and also to Jerusalem (33:16, marg.).

from Hitchcock's Bible Names Dictionary (late 1800's)

Jehovah-tsidkenu, the Lord our righteousness