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
: theta rhythm

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

Phrases Containing theta

Dictionary Entries Near theta

the system

theta

the Tabernacle

See More Nearby Entries 

Cite this Entry

“Theta.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theta. Accessed 1 Dec. 2024.

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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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