theta

Meaning

1. The eighth letter of the Modern Greek alphabet, ninth in Old Greek: Θ, θ.
2. The measure of an angle.
3. Pitch angle; the angle between an aircraft's longitudinal axis and the horizontal plane.
4. The sensitivity of the value of a derivative with respect to time; the "time decay".
5. 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).
6. The voiceless dental fricative represented by θ.

Synonyms

aunt

maternal aunt

tatee

naunt

Pronounced as (IPA)

/ˈθiːtə/

Etymology

Borrowed from Ancient Greek θῆτα (thêta).