theta
Americannoun
-
the eighth letter of the Greek alphabet (Θ, θ).
-
the consonant sound represented by this letter.
noun
-
the eighth letter of the Greek alphabet (Θ, θ), a consonant, transliterated as th
-
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
EEG analysis revealed that pairs of strangers exhibited greater intra-brain synchronization in the theta band, compared to acquainted pairs.
From Science Daily • Apr. 23, 2024
When the combat broke up, the researchers observed 4 to 6 Hz theta band local field potentials in the cerebellum, along with a sustained increase in Ca2+ levels in the glia.
From Science Daily • Dec. 5, 2023
The firing patterns of place cells repeat about eight times per second in rats, forming what is called the theta rhythm.
From Scientific American • Jun. 8, 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.
