Proto-Indo-European
[
proh
-toh-in-doh-y
oo
r-
uh
-
pee
-
uh
n]
/ˈproʊ toʊˌɪn doʊˌyʊər əˈpi ən/
noun
1.
the unattested prehistoric parent language of the Indo-European languages; Indo-European.
adjective
2.
of or pertaining to Proto-Indo-European.
British Dictionary definitions for
Proto-Indo-European
Proto-Indo-European
noun
1.
the prehistoric unrecorded language that was the ancestor of all Indo-European languages