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

Word History and Origins

Origin of theta¹

1595–1605; < Greek thêta < Semitic See teth

Word History and Origins

Origin of theta¹

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

Example Sentences

EEG analysis revealed that pairs of strangers exhibited greater intra-brain synchronization in the theta band, compared to acquainted pairs.

From Science Daily

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

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

Stroik's research showed that polymerase theta is good at some things, but not others.

From Science Daily

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