/ˈθiːtə/, /ˈθeɪtə/, [ˈθeɪɾə]
OriginBorrowed from Ancient Greek θῆτα (thêta).
- The eighth letter of the Modern Greek alphabet, ninth in Old Greek: Θ, θ.
- The measure of an angle.
- broadlyPitch angle; the angle between an aircraft's longitudinal axis and the horizontal plane.
- 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.
- US, colloquialA member of the Kappa Alpha Theta sorority.
Formsthetas(plural) · Thetas(plural)