theta

noun

the·​ta ˈthā-tə How to pronounce theta (audio)
 chiefly British  ˈthē-tə
1
: the 8th letter of the Greek alphabet see Alphabet Table
2

Word History

Etymology

Middle English, from Latin, from Greek thēta, of Semitic origin; akin to Hebrew ṭēth teth

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of theta was in the 15th century

Dictionary Entries Near theta

Cite this Entry

“Theta.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theta. Accessed 15 Jun. 2024.

Kids Definition

theta

noun
the·​ta ˈthāt-ə How to pronounce theta (audio)
ˈthēt-
: the eighth letter of the Greek alphabet
Θ or θ
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