theta

名词 n.
中文释义
英 /ˈθiːtə/    美 /ˈθeɪtə/|[ˈθeɪɾə]|/ˈθitə/|/ˈθæɪtə/|[ˈθæɪɾə]

英文释义

名词 n.
  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. broadly
  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).
    — The reader is less likely to throw the book down in a fit of disgust than she is to be lulled into a theta state, a highway hypnosis induced by page after page of incantatory prose.
  6. The voiceless dental fricative represented by θ.

词形变化

thetas plural

词汇关系

衍生词
antitheta entheta Ramanujan theta function theta-delta thetaform theta function theta graph theta join theta meditation thetan theta pinch thetaprobe theta rhythm theta role thetatron theta wave
并列词
alpha beta gamma

词源

Etymology tree
Ancient Greek θῆτα (thêta)bor.
English theta
Borrowed from Ancient Greek θῆτα (thêta).
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