View source for Barred lambda

{{short description|Modified letter of the Greek alphabet}}
{{Infobox grapheme|name=Barred lambda|image=Latin letter Lambda with stroke.svg|imageclass=skin-invert-image|imagesize=200px|imagealt=Upper and lower case of Latin barred lambda|script=[[Latin script]]|typedesc=ic|phonemes={{ubl|{{IPAslink|tɬ}}}}|alphanumber=|number=|fam1=[[Lambda|Λ λ]]|fam2=[[Lambda (Latin letter)|Ꟛ λ]]|usageperiod=|equivalents=|associates=|type=alphabet|letter=Ƛ ƛ|unicode=U+A7DC, U+019B|language=[[Americanist phonetic notation]]}} {{specialChars}}

The '''barred lambda''' (Ƛ ƛ) ({{unichar|A7DC|LATIN CAPITAL LETTER LAMBDA WITH STROKE|html=}}, {{unichar|019b|LATIN SMALL LETTER LAMBDA WITH STROKE|html=}}), is a modified letter of the [[Greek alphabet]], commonly encountered in North American linguistics. It is used by the [[Salishan languages|Salishan]] and [[Wakashan languages]] in [[Canada]].<ref>{{cite web |last1=Humchitt |first1=Robyn |last2=Jacquerye |first2=Denis |last3=King |first3=Kevin |date=2023-07-17 |title=L2/23-191: Proposal to Encode 3 Additional Latin Characters for Wakashan and Salishan Languages to the Unicode Standard |url=https://www.unicode.org/L2/L2023/23191-three-latin-additions.pdf}}</ref> It is also used in [[Americanist phonetic notation]], where it is also known as '''running man''',<ref>[http://www.tulaliplushootseed.com/alphabet.htm] (strictly speaking, this refers to the [[glottalized]] version, {{IPAblink|t͡ɬʼ}})</ref> to transcribe {{IPAblink|t͡ɬ}}. In [[physics]], it is used to represent the [[Wavelength#Angular wavelength|angular wavelength]], i.e. the wavelength (''λ'') divided by 2{{pi}} ([[Tau|''τ'']]), which corresponds to the length taken up by one [[radian]] of the wave.
<div class=skin-invert-image>{{multiple image
| width             = upright
| footer            = Cased forms of the barred lambda. The capital was assigned to Unicode in 2024.
| image1            = Capital lambda-bar.svg
| alt1              = Capital letter barred lambda
| image2            = Unicode 0x019B.svg
| alt2              = Small letter barred lambda
}}</div>
It was first used in a phonetics context in ''[[American Anthropologist]]'' in 1934:
{{cquote|[[λ]] for [''dl''] has been used in Eskimo by Jenness ... ƛ for [''tł''] is an innovation formed from λ as ''[[ł]]'' from ''l''.<ref>{{cite journal | author=Herzog, George | author-link=George Herzog | author2=Newman, Stanley S. | author3=Sapir, Edward | author3-link=Edward Sapir | author4=Swadesh, Mary Haas | author4-link=Mary Haas | author5=Swadesh, Morris | author5-link=Morris Swadesh | author6=Voegelin, Charles F. | author6-link=Charles F. Voegelin |date=Oct–Dec 1934 | title=Some orthographic recommendations | journal=American Anthropologist | volume=36 | issue=4 | pages=629–631 | doi=10.1525/aa.1934.36.4.02a00300| doi-access=free }}</ref>
}}
It is also used for the affricate [t͡ɬ] in transcribing the [[Sahaptin language]], e.g., iƛúpna ‘he jumped’, and it is commonly used for the same purpose in several [[languages of the Caucasus]]. In addition, its counterpart with a combining comma above right (U+0315), {{Ill|Barred lambda with comma|lt=ƛ̓|fr|ƛ̓}}, is used for many of the Salish languages, such as [[Klallam language|Klallam]], for an ejective lateral affricate [t͡ɬʼ].

== Encodings ==
{{charmap|A7DC|019B
| name1            = LATIN CAPITAL LETTER LAMBDA WITH STROKE
| name2            = LATIN SMALL LETTER LAMBDA WITH STROKE
}}

== References ==
{{reflist}}

{{Latin script|L
| show diacritic = stroke
| show pairs = no
}}{{Latin-script-stub}}{{DEFAULTSORT:Lambda - barred}}
[[Category:Latin-script letters]]
[[Category:Phonetic transcription symbols]]