η

Unicode name	GREEK SMALL LETTER ETA
Codepoint	U+03B7
ζ ← Greek and Coptic → θ

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

Translingual

Symbol

η

1. (physics) the metric tensor in Quantum Field Theory.
2. (chemistry, physics) the coefficient of viscosity

See also

• Η on Wikipedia.Wikipedia

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Greek

Pronunciation

• IPA: /i/

Etymology

Derived from its majuscule counterpart Η, from the Phoenician letter 𐤇, heth.

Article

η  definite    (i)

1. the (feminine singular, nominative)

Declension

The definite article

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)1	τη(ν)1	το	τους	τις	τα
1. Final nu (-ν) preserved solely before vowels or the consonants:                               κ, π, τ  |  ξ, ψ  |  μπ, ντ, γκ, τσ, τζ

Letter

η (lowercase, uppercase Η)

1. Lower-case eta, the eighth letter of the ancient Greek alphabet. Its name was ἦτα and it represented a long open-mid front unrounded vowel: IPA: /ɛː/. It is preceded by ζ and followed by θ.
2. Lower-case eta, the seventh letter of the modern Greek alphabet. Its name is ήτα and it represents a close front unrounded vowel: IPA: /i/. It is preceded by ζ and followed by θ.

See also

• Greek script: Αα    Ββ    Γγ    Δδ    Εε    Ζζ    Ηη    Θθ    Ιι    Κκ    Λλ    Μμ    Νν    Ξξ    Οο    Ππϖ    Ρρ    Σσς    Ττ    Υυ    Φφ    Χχ    Ψψ    Ωω

Derived terms

• η', ,η
• h, H (Roman)
• и, И (Cyrillic)
• й, Й (Cyrillic)
• ⲏ, Ⲏ (Coptic)