theta Hear it!

theta Definition

theta (t̸hāt′ə, t̸hēt′ə)

noun

the eighth letter of the Greek alphabet (Θ, ϑ, θ)

Etymology: Gr thēta: of Sem orig., akin to Heb tet

theta Finance Definition
Measures the change in the premium of an option and compares it to a one-day change in time-to-maturity. The longer an option’s time to expiration, the more valuable an option is. High theta options are favored by option sellers because options have a high rate of time decay.
theta Usage Examples

Converse of object

  • coordinate: The program produces a plot of completeness vs. resolution and a plot of the average radial completeness in polar coordinates theta and phi.

Modifies a noun

  • rhythm: The cellular mechanisms by which the theta rhythm is generated are also becoming better understood.
  • wave: A marked increase in the disturbance of alpha, delta and theta wave patterns in the brain.
  • frequency: During the second clonic phase, the relative power spectrum of theta frequency was higher than that before stunning.
  • power: Theta power decreased sharply 240 ms before movement ended at the rewarded end, but not at the unrewarded end of the track.
  • activity: Respiratory related evoked potentials during the transition from alpha to theta EEG activity in Stage 1 NREM sleep.
  • role: It also permits a move from formal to semantic analysis when considering argument structure, theta roles, aspectual class, voice, etc.

Noun used with modifier

  • angle: Shown below is a detail of the flow where the curtain ( width W ) strikes the web at the dynamic contact angle theta.
  • cos: The limb darkening agrees fairly well with the expected I ~ 2 + 3 cos theta.
  • boundary: A thermodynamic analysis will include a study of the boundary layer theta and theta e together with variations of CAPE and CIN.
  • layer: A thermodynamic analysis will include a study of the boundary layer theta and theta e together with variations of CAPE and CIN.
  • sine: The short vertical line above the sine theta axis marks the position of the Ti K absorption edge.