ῥῆον

English (LSJ)

τό, = ῥᾶ, rhubarb, Gal.12.112.

German (Pape)

[Seite 840] τό, = ῥᾶ, w. m. s.

Greek (Liddell-Scott)

ῥῆον: τό, = ῥᾶ, «ῥῆον, ἔνιοι δὲ προσαγορεύουσιν αὐτὸ ῥᾶ» Γαλην. τ. 13, σ. 224.

Frisk Etymological English

Grammatical information: n.
Meaning: rhubarb (Gal.).
Other forms: Also called Ώῥᾶ (Dsc.)
Etymology: The word would come from the river called Rha, the Wolga (Amm. Marcell. 22,8,28). Cf. André, Lexique s.v. rha a. reum.