noun · verb · 12 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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
UK:/ˈleɪz.ə(ɹ)/
Southern-England:Recorded audio is listed in the source snapshot.
US:/ˈleɪzɚ/
rhymes with -eɪzə(ɹ)
UK:/ˈleɪs.ə(ɹ)/
rhymes with -eɪsə(ɹ)
homophone: lacer
CMU ARPABET:L EY1 Z ER0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A device that produces a monochromatic, coherent beam of light.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A beam of light produced by such a device; a laser beam.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A laser printer.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
Ellipsis of laser hair removal.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
12
noun
Meaning 12
an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: optical maser
Antonyms: none provided
Broader terms: optical device
History
Etymology
Etymology tree Proto-Indo-European *lewk-der. Proto-Germanic *leuhtaz Proto-West Germanic *leuht Old English lēoht Middle English light English light Proto-Indo-European *h3emh3-der. Proto-Indo-European *h3emh3-lo-s Proto-Italic *amlos? Proto-Indo-European *h2ent- Proto-Indo-European *-s Proto-Indo-European *h2énts? Proto-Indo-European *h2m̥bhíder. Proto-Italic *amβi- Latin ambi- Proto-Indo-European *pleh1- Proto-Indo-European *-nós Proto-Indo-European *pl̥h1nós Proto-Italic *plēnosder. Latin plēnus? Latin ambiplus? Latin amplus Proto-Indo-European *dheh1-der. Proto-Italic *θakos Proto-Italic *-fakos Latin -ficus Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-yéti Proto-Indo-European *-eh2yéti Proto-Indo-European *-h2tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Latin -ficō Latin amplificō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin amplificātiōlbor. English amplification Proto-Indo-European *(s)tey-? Latin stimulus Latin stimulo Latin stimulatusbor. English stimulate Proto-Germanic *-ōd- Old English -ode Middle English -ede English -ed English stimulated Proto-Indo-European *h1éǵh Proto-Indo-European *-s Proto-Indo-European *h1éǵhs Proto-Italic *eks Latin ex Latin ex- Proto-Indo-European *mey-? Proto-Indo-European *meyth2- Proto-Indo-European *-eti Proto-Indo-European *méyth2eti Proto-Italic *meitō Old Latin mītō Latin mittō Latin ēmittō ▲ Latin -tiō Latin ēmissiōlbor. Middle French émissionbor. English emission Latin radius ▲ Latin -ō Latin radiō ▲ Latin -tiō Latin radiatiolbor. English radiation English LASER English laser From LASER, acronym of light amplification by stimulated emission of radiation. Coined by American physicist Gordon Gould in 1957. Originally called an optical maser.
Borrowed from Latin laser.
Across languages
Translations
77 source translations are retained for this English entry.
Albanian:
lazer
— device producing beam of light
Arabic:
لَيْزِر
(layzir)
— device producing beam of light
Armenian:
լազեր
(lazer)
— device producing beam of light
Azerbaijani:
lazer
— device producing beam of light
Basque:
laser
— device producing beam of light
Belarusian:
ла́зер
(lázjer)
— device producing beam of light
Bengali:
লেজার
(lejar)
— device producing beam of light
Bulgarian:
ла́зер
(lázer)
— device producing beam of light
Burmese:
လေဆာ
(lehca)
— device producing beam of light
Catalan:
làser
— device producing beam of light
Cebuano:
laser
— device producing beam of light
Chinese Cantonese:
激光
(gik1 gwong1)
— device producing beam of light
Chinese Cantonese:
雷射
(leoi4 se6)
— device producing beam of light
Chinese Cantonese:
鐳射 /镭射
(leoi4 se6)
— device producing beam of light
Hakka Chinese:
雷射
(lùi-sa)
— device producing beam of light
Chinese:
雷射
(zh-min-nan)
— device producing beam of light
Chinese Mandarin:
激光
(jīguāng)
— device producing beam of light
Chinese Mandarin:
雷射
(léishè)
— device producing beam of light
Chinese Mandarin:
鐳射 /镭射
(léishè)
— device producing beam of light
Czech:
laser
— device producing beam of light
Danish:
laser
— device producing beam of light
Dutch:
laser
— device producing beam of light
Esperanto:
lasero
— device producing beam of light
Estonian:
laser
— device producing beam of light
Finnish:
laser
— device producing beam of light
French:
laser
— device producing beam of light
Georgian:
ლაზერი
(lazeri)
— device producing beam of light
German:
Laser
— device producing beam of light
Greek:
λέιζερ
(léizer)
— device producing beam of light