LATIN DICTIONARYLexicon Latīnum
proper noun · masculine

Rha

Rha m (indeclinable)

Meaning

  1. indeclinablemasculinea river in Sarmatia, now the Volga

Rha, indecl., = Ῥᾶ,
I. the Wolga, on whose banks grew the radix pontica, Rha ponticum, rhubarb (Rheum Rhaponticum, Linn.), which thence received its name, Amm. 22, 8, 28 (cf. Cels. 5, 23 fin.).

Origins

Borrowed from Ancient Greek Ῥᾶ (Rhâ).

In the Academy Smith's classical dictionaries

Quick answers

What does Rha mean in Latin?
Rha, a proper noun, means “a river in Sarmatia, now the Volga”.