The eighth letter of the Greek alphabet, uppercase Θ, lowercase θ.

• The IPA symbol θ for the voiceless dental fricative sound.

希腊字母的第八个字母：Θ，θ。

A variable denoting an angle in mathematics and physics.

• The aircraft pitch angle between the longitudinal axis and the horizon.

表示角度的符号，常用于三角学。

In finance, the option Greek measuring time decay of value.

飞机俯仰角：机体纵轴与地平线的夹角。

A brainwave band at about 4–7 Hz seen in EEG, linked to drowsiness.

期权的希腊字母指标，衡量随时间的价值衰减。

A member of the Kappa Alpha Theta sorority.

脑电图4–7赫兹频段，与困倦相关。

清齿擦音，在语音学中用θ表示。

Kappa Alpha Theta女生联谊会的成员。