Background for theta

theta

/ˈθiːtə/ /ˈθeɪtə/

Illustration theta - Image 1

noun

The eighth letter of the Modern Greek alphabet, ninth in Old Greek: Θ, θ.

Examples :

""In Greek class, we learned that theta is the eighth letter of the alphabet." "

Illustration theta - Image 1

noun

The measure of an angle.

Examples :

"The math problem asks us to find theta, which is the angle of the triangle. "

Illustration theta - Image 1

noun

The sensitivity of the value of a derivative with respect to time; the "time decay".

Examples :

"The option's theta was significant; each day, its value decreased noticeably due to time decay. "

finance business math time

Illustration theta - Image 1

noun

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).

Examples :

"As the meditation session deepened, the brainwave monitor showed a shift from alpha to theta, indicating increased relaxation and a state close to sleep. "

physiology mind medicine frequency sensation

Illustration theta - Image 1

noun

The voiceless dental fricative represented by θ.

Examples :

"In phonetics class, we practiced making the "th" sound in "thin," which is represented by the Greek letter theta. "

phonetics language linguistics word