theta
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theta¹
- /ˈθiːtə/ UK
- /ˈθeɪtə/ Canada, US
- [ˈθeɪɾə] Canada, US
- /ˈθitə/ Canada, US
- /ˈθæɪtə/ Australia, New Zealand
- [ˈθæɪɾə] Australia, New Zealand
- /ˈθeɪ.ta/ Hong Kong
- [fei̯˥ tʰaː˩] Hong Kong
Rhymes with -iːtə, -eɪtə
Where it comes from
Borrowed from Ancient Greek θῆτα (thêta).
noun thetas
- The eighth letter of the Modern Greek alphabet, ninth in Old Greek: Θ, θ.
- The measure of an angle.
-
Pitch angle; the angle between an aircraft's longitudinal axis and the horizontal plane.
Similar: deck angle
- The sensitivity of the value of a derivative with respect to time; the "time decay".
- Designating a level of brain activity as measured by electroencephalography having a frequency of between four and seven cycles per second (associated with drowsiness in adults). The reader is less likely to throw the book down in a fit of disgust than she is to be lulled into a theta state, a highway hypnosis induced by page after page of incantatory prose.
- The voiceless dental fricative represented by θ.
Theta²
noun Thetas
- A member of the Kappa Alpha Theta sorority.
Thesaurus
Closest in meaning: phi, iota, thee, upsilon, tythe, thetatron, tetragram, tetractys, tau cross, tho., tetragramme, trgl., tithe, tetragraph, threy, thou
Translations
Talk about this word "theta." Wiktionary, via Micwyn, micwyn.com/word/theta. Accessed 6 Nov. 2026. theta. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/theta "theta." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/theta.Cite this
@misc{theta_2026,
title = {theta},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/theta},
urldate = {2026-11-06}
}