# β

| β | U+03B2, &#946; GREEK SMALL LETTER BETA |
| ← α [U+03B1] | Greek and Coptic | γ → [U+03B3] |
| ᵝ | U+1D5D, &#7517; MODIFIER LETTER SMALL BETA |
| ← ᵜ [U+1D5C] | Phonetic Extensions | ᵞ → [U+1D5E] |
| 𝛽 | U+1D6FD, &#120573; MATHEMATICAL ITALIC SMALL BETA |
| ← 𝛼 [U+1D6FC] | Mathematical Alphanumeric Symbols | 𝛾 → [U+1D6FE] |

## Translingual
### Alternative forms

* (IPA): ꞵ

### Pronunciation

* IPA:(file)

### Symbol

β
* (IPA, UPA) a voiced bilabial fricative or, occasionally, approximant.
* (superscript ⟨ᵝ⟩, IPA) [β]-fricated release of a plosive (e.g. [bᵝ], sometimes implying an affricate [b͜β]); [β]-coloring; or a weak, fleeting or epenthetic [β].
    Specifically, on a vowel letter: a compressed vowel, e.g. Swedish /ʏᵝː/.
    On a Shona consonant: a whistled sibilant /z̤ᵝ/.
* (chemistry) Used in chemical nomenclature to refer to the second of several isomers, positions or variations.
    β-carotene is the most well-known isomer of tetraterpene hydrocarbons, C$_{40}$H$_{56}$.
* (topology) Stone–Čech compactification
* (physics) beta ray, beta particle, beta radiation
* (relativity) speed parameter, $\beta ={\frac {v}{c}}$
    $\gamma ={1 \over {\sqrt {1-\beta ^{2}}}}={1 \over {\sqrt {1-{v^{2} \over c^{2}}}}}$

### Derivations

* (IPA) ⟨β̞⟩ (specifically an approximant)

### See also

* β on Wikipedia.Wikipedia

## Albanian
### Pronunciation

IPA: /v(ə)/

### Letter

β (v) (upper case Β, lower case β)
* The 2nd letter of the Arvanitic Albanian Greek-script alphabet.

### See also

* Greek script letters (script appendix): Α α, Β β, B b, Γ γ, Γϳ γϳ, Δ δ, D d, Ε ε, Ε̱ ε̱, Ζ ζ, Ζ̇ ζ̇, Θ θ, Ι ι, Ϳ ϳ, Κ κ, Κ̇ κ̇, Λ λ, ΛΛ λλ, Λ̇ λ̇, Μ μ, Ν ν, Ν̇ ν̇, Ο ο, Π π, Ρ ρ, Ρ̇ ρ̇, Σ σ, Σ̈ σ̈, Τ τ, Ȣ ȣ, Υ υ, Φ φ, Χ χ, Χ̇ χ̇, ΤΣ τσ, ΤΣ̈ τσ̈, DΣ dσ, DΣ̈ dσ̈
* (Latin-script letters) shkronjë; A a, B b, C c, Ç ç, D d, Dh dh, E e, Ë ë, F f, G g, Gj gj, H h, I i, J j, K k, L l, Ll ll, M m, N n, Nj nj, O o, P p, Q q, R r, Rr rr, S s, Sh sh, T t, Th th, U u, V v, X x, Xh xh, Y y, Z z, Zh zh

## Ancient Greek
### Etymology

Derived from its majuscule counterpart Β, from the Phoenician letter 𐤁, beth.

### Letter

β • (b) (lowercase, uppercase Β)
* Lower-case beta (βῆτα), the second letter of the ancient Greek alphabet. It represented the voiced bilabial plosive: /b/ and later the voiced labiodental fricative /v/. It is preceded by α and followed by γ.

#### Derived terms

See also beta
* β’ (v’), ,β (,v)
* b, B (Roman)
* б, Б; в, В (Cyrillic)
* 𐌱 (Gothic)
* ⲃ, Ⲃ (Coptic)
* β-particle

### See also

* (Greek-script letters) Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω
* (non-Classical letters) Ϝ (W) ϝ (w), Ͷ ͷ, Ͱ (H) ͱ (h), Ϻ (Ś) ϻ (ś), Ϟ, ϟ, Ϙ (Q) ϙ (q), Ͳ (S) ͳ (s)
* (punctuation) · ;
* (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨

## Chinese
### Pronunciation

* Mandarin
    (Pinyin): bèitǎ, bī
    (Zhuyin): ㄅㄟˋ ㄊㄚˇ, ㄅㄧ
* Mandarin
** (Standard Chinese)
*** Hanyu Pinyin: bèitǎ
*** Zhuyin: ㄅㄟˋ ㄊㄚˇ
*** Tongyong Pinyin: bèitǎ
*** Wade–Giles: pei$^4$-tʻa$^3$
*** Yale: bèi-tǎ
*** Gwoyeu Romatzyh: beytaa
*** Palladius: бэйта (bɛjta)
*** Sinological IPA : /peɪ̯⁵¹ tʰä²¹⁴⁻²¹⁽⁴⁾/
** (Standard Chinese)
*** Hanyu Pinyin: bī
*** Zhuyin: ㄅㄧ
*** Tongyong Pinyin: bi
*** Wade–Giles: pi$^1$
*** Yale: bī
*** Gwoyeu Romatzyh: bi
*** Palladius: би (bi)
*** Sinological IPA : /pi⁵⁵/

### Noun

β
* Alternative form of 貝塔 / 贝塔 (bèitǎ)
* (Mandarin, chiefly Internet slang) Alternative form of 屄 (bī)

## Greek
### Letter

β • (v) (lowercase, uppercase Β)
* Lower-case beta (βήτα), the second letter of the modern Greek alphabet. It represents the voiced labiodental fricative: /v/. It is preceded by α and followed by γ.

#### Derived terms

* β’ (v’, “two, 2”)
* ,β (,v, “two thousand, 2,000”)

#### See also

* Appendix:Greek alphabet
* (Greek-script letters) Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω
* (non-Classical letters) Ϝ (W) ϝ (w), Ͷ ͷ, Ͱ (H) ͱ (h), Ϻ (Ś) ϻ (ś), Ϟ, ϟ, Ϙ (Q) ϙ (q), Ͳ (S) ͳ (s)
* (punctuation) · ;
* (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨