Gallo-
Word Origin
1 
a combining form representing Gallic, in the formation of compound words:
Gallo-Romance.
Origin
< Latin, equivalent to Gall(us) a Gaul + -o-
Gallo-
combining form. Gallic; French; France; French things: Gallophile = a friend or admirer of the French.
[< Latin Gallus a Gaul]
gallo-
I.combining form 
Etymology: Latin Gallo- Gaulish, from Gallus Gaul, inhabitant of ancient Gaul 
1. capitalized : Gaulish and 
< Gallo-Roman >
2. capitalized : French and 
< Gallo-Briton >
3. often capitalized : France 
< gallocentric >
II.
— see gall-
I.
1. capitalized
< Gallo-Roman >
2. capitalized
< Gallo-Briton >
3. often capitalized
< gallocentric >
II.
— see gall-