一種橘色或紅色、透明的化合物，原本是由茜草屬植物的根部所取得，主要用來製作紅色的顏料及染料。在1869年，成為最早以合成方式複製之天然色素。

茜素(著色劑)　(P,,U,繁體中文-偏好,D,U,U)
ch'ien su (P,,U,韋氏拼音-偏好,UF,U,U)
qiàn sù (P,,U,漢語拼音-偏好,UF,U,U)
qian su (P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
alizarin(colorant)　(P,,U,英文-偏好,D,U,N)
natural alizarin(,U,英文-非偏好,UF,U,N)
alizari(,U,英文-非偏好,UF,U,N)
dihydroxy anthraquinone(,U,英文-非偏好,UF,U,N)
Alizarin(colorant)　(P,,U,German-偏好,D,U,N)
alizarine(P,,U,荷蘭語-偏好,D,U,U)
alizarine(colorant)　(P,,U,法語-偏好,D,U,N)
alizarien(,U,荷蘭語-非偏好,AD,U,U)
alizarina(P,,U,Italian-偏好,D,U,N)
alizarina(colorante)　(P,,U,西班牙語-偏好,D,U,N)
rubia de alizarina(,U,西班牙語-非偏好,AD,U,U)

藝術與建築詞典根目錄
....材料層面
........材料 (材料層面)
............材料
................<依功能區分之材料>
....................著色劑 (材料)
........................<染料或顏料之著色劑>
............................茜素 (著色劑)

藝術與建築詞典根目錄
....材料層面
........材料 (材料層面)
............材料
................<依功能區分之材料>
....................著色劑 (材料)
........................染料 (著色劑)
............................<依構成要素或來源區分之染料>
................................合成染料
....................................茜素 (著色劑)

constituent part for....

茜草色澱(著色劑)

英文....	A red colorant extracted along with purpurin from the roots of the madder plant; the chemical name for alizarin is dihydroxy anthraquinone. It has been used as a dye and pigment since ancient times. In 1869 it became the first natural pigment to be duplicated synthetically.
荷蘭語....	Een oranje of rode kristallijne verbinding verkregen uit de meekrapplant, het belangrijkste kleurmiddel van meekrap; wordt tegenwoordig synthetisch gemaakt van antrachinon. Wordt hoofdzakelijk gebruikt om rode verfstoffen en pigmenten te verkrijgen.
西班牙語....	Compuesto cristalino anaranjado o rojo preparado a partir de la planta de alizari o rubia, principal agente colorante de la rubia, actualmente obtenida sintéticamente a partir de la antraquinona. Se usa fundamentalmente para fabricar pigmento y anilina roja.

茜素(著色劑)............	[AS-Academia Sinica]
.................	國家教育研究院－雙語詞彙、學術名詞暨辭書資訊網 September 23, 2011
.................	朗文英漢雙解科技大辭典 p. 43
.................	大英百科全書線上繁體中文版 September 23, 2011
.................	化學名詞辭典 p. 6
alizarin(colorant)............	[VP]
.................	Gettens and Stout, Painting Materials (1966) 91
.................	CDMARC Subjects: LCSH (1988-)
.................	Brady and Clauser, Materials Handbook (1977) 456
.................	Webster's Third New International Dictionary (1961)
.................	Wehlte, Materials and Techniques of Painting (1982) 54
.................	AATA database (1995-) 120299 checked 26 January 2012
natural alizarin............	[VP]
.................	MFA Conservation and Art Material Encyclopedia Online (2005-)
alizari............	[VP]
.................	Brady and Clauser, Materials Handbook (1977)
dihydroxy anthraquinone............	[VP]
.................	Mayer, Dictionary of Art Terms and Techniques (1969) 10, in def. of alizarin crimson.
Alizarin(colorant)............	[VP]
.................	Fitzhugh, ed., Artists Pigments, vol.3 (unpub.)
alizarine............	[VP]
.................	Fitzhugh, ed., Artists Pigments, vol.3 (unpub.) FRA
.................	Webster's Third New International Dictionary (1961)
.................	CHIN database
.................	AAT-Ned (1994-)
alizarien............	[Bureau AAT]
.................	AAT-Ned (1994-)
alizarina............	[VP]
.................	Fitzhugh, ed., Artists Pigments, vol.3 (unpub.) ESP; ITA
.................	TAA database (2000-)
rubia de alizarina............	[CDBP-DIBAM]
.................	Diccionario de Química y de productos químicos (1993) 1084
Subject:............	[Bureau AAT]
.................	CHIN database
.................	AATA database (1995-) 120299 checked 26 January 2012
.................	Van Dale Engels-Nederlands (1989)

Getty AAT: 300013093 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300013093
聯合目錄： 茜素 、ch'ien su 、qiàn sù 、qian su 、alizarin 、natural alizarin 、alizari 、dihydroxy anthraquinone 、Alizarin 、alizarine 、alizarien 、alizarine 、alizarina 、alizarina 、rubia de alizarina