rho

R1H4O1
UK/ɹəʊ/US/ɹoʊ/

noun

The seventeenth letter of the Modern Greek and Classical alphabets and the nineteenth letter of Old and Ancient.

OriginAncient Greek ῥῶ →
Less commonScrabble 6
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

rho1

nounrho (plural rhos)

plural rhos

  1. The seventeenth letter of the Modern Greek and Classical alphabets and the nineteenth letter of Old and Ancient.

    Greek was an exercise in making the familiar strange. Its alphabet mapped onto the Roman alphabet, but only partly so, and often letters did not sound how they looked – a rho (Ρ) was not a P, and an eta (Η) was not an H.

    2022, R. F. Kuang, Babel, HarperVoyager, page 25
  2. businessThe sensitivity of the option value to the risk-free interest rate.

Rho2

nounRho (plural Rhos)

plural Rhos

  1. biochemistryAny of a family of GTP-binding proteins
proper noun
  1. A town and comune in the Metropolitan City of Milan, Lombardy, Italy.

Origin

  1. Ancient Greekῥῶ
  2. Ancient Greekῥῶ
  3. Englishrho

From the name of the Ancient Greek letter ῥῶ (rhô).

More words from Ancient Greek

Full word history & related roots →

Translations

Ancient Greek ῥῶ
  • ῥῶ (rhô)letter of Greek alphabet
Arabic رُو
  • رُو (rū)letter of Greek alphabet
Catalan ro
  • roletter of Greek alphabet
Chinese Mandarin 肉, 若
  • 肉 (ròu)letter of Greek alphabet
  • 若 (ruò)letter of Greek alphabet
  • 柔 (róu)letter of Greek alphabet
Dutch rho
  • rholetter of Greek alphabet
Esperanto roto
  • rotoletter of Greek alphabet
Finnish rhoo
  • rhooletter of Greek alphabet
French rhô, rho
  • rhôletter of Greek alphabet
  • rholetter of Greek alphabet
German Rho
  • Rholetter of Greek alphabet
Greek ρο
  • ρο (ro)letter of Greek alphabet
Hebrew רוֹ
  • רוֹ (ro)letter of Greek alphabet
Hungarian ró
  • róletter of Greek alphabet
Irish ró
  • róletter of Greek alphabet
Japanese ロー
  • ロー (rō)letter of Greek alphabet
Korean 로
  • 로 (ro)letter of Greek alphabet
Latin rhō
  • rhōletter of Greek alphabet
Malay ro
  • roletter of Greek alphabet
Māori rōu
  • rōuletter of Greek alphabet
Polish rho, ro
  • rholetter of Greek alphabet
  • roletter of Greek alphabet
Portuguese rô, ró
  • rôletter of Greek alphabet
  • róletter of Greek alphabet
Russian ро
  • ро (ro)letter of Greek alphabet
Spanish ro, rho
  • roletter of Greek alphabet
  • rholetter of Greek alphabet
Swedish rho
  • rholetter of Greek alphabet

Rhymes & wordplay

Rhymes with rho

todonosogoknowshowolowbelowcoproagothoughohalthoughflowpojoemosnowhellorowgrow
All rhymes →

Sounds the same

roeRoeWroerowRowe (toe–tow merger)

Anagrams

ROHhororh
Cite this entry
APA

rho. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/rho

MLA

“rho.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rho. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “rho,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/rho.

Source: rho on Wiktionary, CC BY-SA 4.0.