Word.ws English Dictionary

rho

UK/ɹəʊ//ɹoʊ/

rho noun: the seventeenth letter of the Modern Greek and Classical alphabets and the nineteenth letter of Old and Ancient.

rho: the seventeenth letter of the Modern Greek and Classical alphabets and the nineteenth letter of Old...
Image: Mrmw, Public domain, via Wikimedia Commons

Noun (1)

rho (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. The sensitivity of the option value to the risk-free interest rate.

Noun (2) capitalized: Rho

Rho (plural Rhos)

  1. Any of a family of GTP-binding proteins

Proper noun capitalized: Rho

Rho

  1. A town and comune in the Metropolitan City of Milan, Lombardy, Italy.

rho meaning in Arabic and Malay

rho in Arabic

letter of Greek alphabet
رُو rū

rho in Malay

letter of Greek alphabet
ro

Forms of rho

pluralrhos
pluralRhos

Plural of rho: rhos

Origin of rho

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

Words formed from rho

Phrases with rho

Words that rhyme with rho

48 more rhymesFewer rhymes

Questions about rho

What does rho mean?
Rho means the seventeenth letter of the Modern Greek and Classical alphabets and the nineteenth letter of Old and Ancient.
What is rho in Arabic?
Rho in Arabic is رُو (rū). See Rho meaning in Arabic.
What part of speech is rho?
Rho can be a noun or a proper noun.
How do you pronounce rho?
Rho is pronounced /ɹəʊ/ (UK).
What is the plural of rho?
The plural of rho is rhos.

Words near rho in the dictionary

  1. rhizotrones
  2. rhizotrons
  3. rhizoxin
  4. rhizoxins
  5. rhlA
  6. rho
  7. rho meson
  8. rho mesons
  9. Rhoad
  10. Rhoades
  11. Rhoadeses

Source and license

Adapted from Wiktionary: rho (page history and authors); Rho (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-rho.ogg.

Cite this entry: “rho.” Word.ws, https://word.ws/rho. Based on Wiktionary, CC BY-SA 4.0.