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theta

[ they-tuh, thee- ]

noun

  1. the eighth letter of the Greek alphabet (Θ, θ).
  2. the consonant sound represented by this letter.


theta

/ ˈθiːtə /

noun

  1. the eighth letter of the Greek alphabet (Θ, θ), a consonant, transliterated as th
  2. the lower-case form of this letter used in phonetic transcription to represent the voiceless dental fricative th as in thick, both Compare edh
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of theta1

1595–1605; < Greek thêta < Semitic See teth
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Word History and Origins

Origin of theta1

C17: from Greek, of Semitic origin; compare Hebrew tēth
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Example Sentences

Horses that roamed with their herd, grazing outdoors at will, had more theta brainwaves.

Theta waves, in contrast, correlate with daydreaming—a sort of mental relaxation.

We can see this with decreased theta brain waves in the hippocampus, which is necessary to retrieve memories, the authors explained.

The region then further smothers theta waves in the hippocampus in an effort to stop intrusive thoughts.

Theta waves, which wash over the hippocampus, trigger a state in the brain that’s prone to a flow of ideas—à la “shower thoughts.”

As vice president of Theta, I was tasked with figuring out how to get members more involved.

In Scientology parlance, good news is theta news; entheta is the opposite.

The Gothic alphabet, in fact, as used in this country, had a Theta for expressing in one letter our present t and h conjoined.

The Theta Gammas wrote her down as material for a quaint little, quiet little dig,—not of sorority interest.

We'll go back to 29, and put in sine squared theta minus one equal to z sub four.

In order to make any solution at all possible you have assumed cosine squared theta negligible.

He maintained, however, that he had noticed Theta Cancri as well as the two planets, but without recording its position.

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The Symposiumtail wagging the dog, the