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tetrarch

/ˈtɛtɹɑɹk/noun, adjective

tetrarch is a noun meaning “A governor or ruler of a quarter of a country, especially of a fourth part of a province in or client state of Ancient Rome” (English Wiktionary, September 2026). It is spelled T-E-T-R-A-R-C-H, and it appears about once in every 12 million words in written English (wordfreq, 2021 data). The plural of tetrarch is tetrarchs.

What does tetrarch mean?

noun

  1. 1

    A governor or ruler of a quarter of a country, especially of a fourth part of a province in or client state of Ancient Rome.

  2. 2

    Each of the four members of a jointly ruling tetrarchy, notably of the Roman Empire since Diocletian.

  3. 3

    An officer in charge of a fourth part of a phalanx in Ancient Greece.

adjective

  1. 1

    Having four vascular strands in a fibrovascular cylinder or stele.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How do you pronounce tetrarch?

  • US /ˈtɛtɹɑɹk/
  • UK /ˈtɛtɹɑːk/

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of tetrarch

  • tetrarchs plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is tetrarch?

Tetrarch appears about once in every 12 million words in written English, the 102,771st most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Tetrarch in Spanish, French, German and Portuguese

In the sense governor or ruler of quarter of a country:

LanguageWords
Frenchtétrarque
GermanTetrarch
Portuguesetetrarca
Spanishtetrarca

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does tetrarch come from?

Borrowed from Latin tetrarchēs, from Ancient Greek τετράρχης (tetrárkhēs), from τετρα- (tetra-, “four”) + -άρχης (-árkhēs, “ruler, leader”).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).