noun · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/ˈæl.kəˌlaɪ/
ălʹkə-lī'
General-American:Recorded audio is listed in the source snapshot.
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:AE1 L K AH0 L AY2
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
One of a class of caustic bases, such as soda, soda ash, caustic soda, potash, ammonia, and lithia, whose distinguishing characteristics are dissolving in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
Definition source: English Wiktionary via Wiktextract
a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: salt
History
Etymology
From French alcali, from Medieval Latin alcali, ultimately from Arabic اَلْقِلْي (al-qily, “alkali, ashes of the saltwort”), related to قَلَى (qalā, “to roast in a pan, fry”).
Across languages
Translations
70 source translations are retained for this English entry.
Afrikaans:
alkali
— class of caustic bases
Arabic:
قَلَوِيّ
(qalawiyy)
— class of caustic bases
Armenian:
ալկալի
(alkali)
— class of caustic bases
Azerbaijani:
qələvi
— class of caustic bases
Basque:
alkali
— class of caustic bases
Belarusian:
шчо́лач
(ščólač)
— class of caustic bases
Belarusian:
луг
(luh)
— class of caustic bases
Bulgarian:
основа
(osnova)
— class of caustic bases
Catalan:
àlcali
— class of caustic bases
Chinese Mandarin:
鹼 /碱
(jiǎn)
— class of caustic bases
Czech:
alkálie
— class of caustic bases
Danish:
alkali
— class of caustic bases
Dutch:
alkali
— class of caustic bases
Esperanto:
alkalo
— class of caustic bases
Estonian:
leelis
— class of caustic bases
Estonian:
alkali
— class of caustic bases
Finnish:
alkali
— class of caustic bases
Finnish:
emäs
— class of caustic bases
French:
alcali
— class of caustic bases
Georgian:
ტუტე
(ṭuṭe)
— class of caustic bases
Georgian:
ტუტემიწა
(ṭuṭemic̣a)
— class of caustic bases
German:
Alkali
— class of caustic bases
Greek:
αλκαλίο
(alkalío)
— class of caustic bases
Hebrew:
אלקלי
(alkali)
— class of caustic bases
Hungarian:
alkáli
— class of caustic bases
Hungarian:
lúg
— class of caustic bases
Indonesian:
alkali
— class of caustic bases
Irish:
alcaile
— class of caustic bases
Italian:
alcali
— class of caustic bases
Italian:
base
— class of caustic bases
Japanese:
アルカリ
(arukari)
— class of caustic bases
Kazakh:
сілті
(sıltı)
— class of caustic bases
Khmer:
អាល់កាលី
(ʼalkaalii)
— class of caustic bases
Korean:
알칼리
(alkalli)
— class of caustic bases
Northern Kurdish:
qilê
— class of caustic bases
Northern Kurdish:
qela
— class of caustic bases
Northern Kurdish:
tift
— class of caustic bases
Latvian:
sārmi
— class of caustic bases
Lithuanian:
šarmas
— class of caustic bases
Macedonian:
алкално
(alkalno)
— class of caustic bases
Malay:
alkali
— class of caustic bases
Māori:
waipāhua
— class of caustic bases
Navajo:
łeeyáán
— class of caustic bases
Norwegian Bokmål:
alkali
— class of caustic bases
Norwegian Nynorsk:
alkali
— class of caustic bases
Occitan:
alcalí
— class of caustic bases
Odia:
କ୍ଷାର
(kṣāra)
— class of caustic bases
Ossetian:
изгӕрт
(izgært)
— class of caustic bases
Persian:
قلیا
(qaliyâ)
— class of caustic bases
Persian:
شخار
(šaxâr)
— class of caustic bases
Polish:
alkalia
— class of caustic bases
Portuguese:
álcali
— class of caustic bases
Romanian:
alcaliu
— class of caustic bases
Russian:
щёлочь
(ščóločʹ)
— class of caustic bases
Serbo-Croatian:
алкалије
— class of caustic bases
Serbo-Croatian:
база
— class of caustic bases
Serbo-Croatian:
alkalije
— class of caustic bases
Serbo-Croatian:
baza
— class of caustic bases
Slovak:
alkálie
— class of caustic bases
Slovene:
alkalija
— class of caustic bases
Sogdian:
ܘܝݍܬܪܝ
(wižtarγ)
— class of caustic bases
Spanish:
álcali
— class of caustic bases
Swedish:
alkali
— class of caustic bases
Swedish:
alkalie
— class of caustic bases
Telugu:
క్షారము
(kṣāramu)
— class of caustic bases