Origin of vodkaRuss, diminutive of voda, water
Origin of vodkaRussian, diminutive of voda, water; see wed-1 in Indo-European roots.
Slavic voda, woda, meaning water, plus the diminutive suffix -ka. Historical documentary research of V. Pokhlyobkin suggests the derivation via the usage "dilution (of distillate) with water", as used in expressions "vodka of grain wine" and similar; Ñ…Ð»ÐµÐ±Ð½Ð¾Ðµ Ð²Ð¸Ð½Ð¾ (xlebnoje vino, “grain wine") is an archaic Russian name for vodka.
The standard of identity is from the Code of Federal Regulations, title 27, section 5.22(a)(1).