theta
Americannoun
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the eighth letter of the Greek alphabet (Θ, θ).
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the consonant sound represented by this letter.
noun
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the eighth letter of the Greek alphabet (Θ, θ), a consonant, transliterated as th
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the lower-case form of this letter used in phonetic transcription to represent the voiceless dental fricative th as in thick, both Compare edh
Etymology
Origin of theta
1595–1605; < Greek thêta < Semitic See teth
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"Post-sleep neural activity showed unique patterns of theta oscillations associated with cognitive control and memory consolidation, suggesting a strong link between sleep-induced brainwave co-ordination and learning outcomes."
From Science Daily • Dec. 5, 2024
PAC neurons fire in time with the brain's theta waves, which are associated with focus and control, as well as to gamma waves, which are linked to information processing.
From Science Daily • Apr. 17, 2024
Stroik had another breakthrough finding: polymerases theta and delta are physically attached to one another.
From Science Daily • Nov. 15, 2023
The five common brain-wave types, named alpha, beta, gamma, delta and theta depending on their oscillation rate, signify different states of the brain.
From Scientific American • Jun. 16, 2023
“These are the theta waves,” he told the audience.
From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
