Jehovah-nissi; Jehovahnissi

Boyd’s Bible Dictionary:

(God my banner). The altar built in honor of Joshua’s victory (Ex. 17:15).

Concise Bible Dictionary:

Name, signifying “Jehovah my banner,” which Moses gave to the altar he built after the defeat of Amalek (Ex. 17:15).

Strong’s Dictionary of Hebrew Words:

Number:
3071 (find all occurrences in KJV Bible)
Transliteration:
Yhovah
Phonic:
nicciy
Meaning:
from 3068 and 5251 with the prononimal suffix; Jehovah (is) my banner; Jehovah-Nissi, a symbolical name of an altar in the Desert
KJV Usage:
Jehovah-nissi

Jackson’s Dictionary of Scripture Proper Names:

Jehovah my banner

Potts’ Bible Proper Names:

God is my banner:―symbolical name of an altar in the desert, Exod. 17:15. {Dominus est vexillum meum}