Speakur

Word Pronunciation & Dictionary

lumen

/ˈlumən/

Word Rarity Rare

Frequency: 3.09 in modern English

Syllables
lu-men
IPA
/ˈlumən/
7
Scrabble Score
5
Letters
2
Syllables
5
Unique Chars

Meaning

noun

In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.

noun

The cavity or channel within a tube or tubular organ.

noun

The cavity bounded by a plant cell wall.

noun

The bore of a tube such as a hollow needle or catheter.

Etymology

Borrowed from Latin lūmen (“light, an opening”). Use as a unit was first adopted by French physicist André Blondel in 1894.

Origin

Word Breakdown

Regional Pronunciation

  • American English: /ˈlumən/
  • British English: /ˈluːmən/

Subject

Wiktionary places this term in Medicine.

Inflected Forms

lumens (plural) lumina (plural)

Derived Forms

decalumen endolumen kilolumen lumenal lumenally lumened lumenize lumenless lumenogenesis multilumen teralumen

Phrases

lumen-hour lumen method lumen second lumen-second

Frequently Paired Words

candela luminal lux

Synonyms

lm

Rhymes With

human non-human semi-human newman truman inhuman superhuman neumann cumin acumen schumann bitumen

Questions

How do you pronounce lumen?
The recorded pronunciation is /ˈlumən/.
What does lumen mean?
In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.
Where does lumen come from?
It is traced to Latin.

How to pronounce lumen

  1. Open the pronunciation page — Open the Speakur entry for “lumen”.
  2. Read the phonetic spelling — Read the IPA spelling (/ˈlumən/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “lumen”.
  4. Repeat and practice — Say “lumen” aloud, matching stress and vowels until it feels natural.