η

See also: ή, , , , , դ, ղ, , and Variations of "h"

η - Translingual

Symbol

η

  1. (mathematics) The metric tensor in quantum field theory.
  2. (chemistry, physics) The coefficient of viscosity.
  3. (engineering) Efficiency in engineering.
  4. (physics) Sommerfeld parameter.
  5. (machine learning) Learning rate.

η - Ancient Greek

Letter

η (ē) (lowercase, uppercase Η)

  1. Lower-case eta, the seventh letter of the ancient Greek alphabet. Its name was ἦτα and it represented a long open-mid front unrounded vowel: /ɛː/. It is often transliterated as either e or i. It is preceded by ζ and followed by θ.

Derived terms

η - Greek

Pronunciation

  • IPA: /i/
  • Homophone: οι (oi)

Letter

η (i) (lowercase, uppercase Η)

  1. Lower-case eta, the seventh letter of the modern Greek alphabet. Its name is ήτα and it represents a close front unrounded vowel: /i/. It is often transliterated as either e or i. It is preceded by ζ and followed by θ.

Article

η (i) f sg

  1. (definite) nominative feminine singular of ο (o) (the)

Declension

number singular plural
gender m f n m f n
nominative ο η το οι οι τα
genitive του της του των των των
accusative το(ν)* τη(ν)* το τους τις τα
* The final "ν" is preserved before vowels, and the plosive/affricate consonants:       κ, π, τ, ξ, ψ, μπ, ντ, γκ, τσ, τζ

1. Archaic forms used in certain fixed phrases:       τοις (tois), τας (tas)

Meaning and Definition of η
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