theta
English
/ˈθiːtə/, /ˈθeɪtə/
noun
Definitions
- The eighth letter of the Modern Greek alphabet, ninth in Old Greek: Θ, θ.
- (mathematics) The measure of an angle.
- (finance) The sensitivity of the value of a derivative with respect to time; the "time decay".
- (biology) 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).
- (phonology) The voiceless dental fricative represented by θ.
Etymology
Borrowed from Ancient Greek θῆτα (theta).
Origin
Ancient Greek
θῆτα
Gloss
theta
Timeline
Distribution of cognates by language
Geogrpahic distribution of cognates
Cognates and derived terms
- antitheta English
- probe English
- rhythm English
- theta rhythm English
- theta wave English
- thetaform English
- thetan English
- thetaprobe English
- thetatron English
- wave English
- theeta Finnish
- théta Hungarian
- θῆτα Ancient Greek
- teta Portuguese
- シータ Japanese
- theta Catalan, Valencian
- thetaiotaomicron Translingual
- 𐤈 Phoenician