The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
in the Russian language, a prefix designating (1) a remote direct degree of kinship, as in praded (“great-grandfather”) or pravnuk (“great-grandson”), and (2) being of the nature of a precursor, for example, praiazyk (“protolanguage”).
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.