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luminescent

luminescent

5 7.0
A thing that gives off light without heat, like fireflies or jellyfish
  • adjective
  • /ˌluːməˈnɛsənt/
  • Specialized
translation icon : luminescente
  • As first light crept across the sky, lumps of white shone nearly luminescent on the downhill slope.
  • luminescent glow
  • luminescent light
  • luminescent fish

It's ultra sheer, ultra luminescent, ultra pearlescent without there being lots of shimmer.

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Examples

  • Now the Basilica Julia is on our left, with its luminescent rows of marble columns still under construction.

    Academic text (2007)
  • Above him, the moon tinged black clouds with luminescent edges, then sank behind them into darkness.

    Fiction book (1996)
  • And when you put it on, it's very luminescent and it shines very well.

  • It's luminescent and flawless and beautiful.

  • Another image of the room is still there, vaguely luminescent in the night.

    Fiction book (2001)
  • Angel was huge behind them, a luminescent presence, her halo shining silver.

    Fiction book (1991)
  • As in more than 30 other squid species, a light organ houses luminescent bacteria.

    Academic text (1993)
  • The beautiful walk through the Siq under a luminescent blue sky is about three-quarters of a mile.

    Academic text (2008)
  • In fall, the full luminescent hollow of a harvest moon floats over the Higashiyama Mountains.

    Fiction book (2000)
  • The luminescent glow of the jellyfish illuminated the dark waters around it.

Synonyms

radiant
vsluminescent
64 4.1

Shining or glowing brightly, often seeming very happy

describes heatless emission without implying strong brightness
luminous
vsluminescent
38 4.8

Shining with a soft steady light like a lantern

indicates light production without heat rather than gentle or reflective glow
fluorescent
vsluminescent
7 4.8

Very bright colors that seem to glow in daylight

denotes emission without heat rather than apparent brightness of color
phosphorescent
vsluminescent
  • Specialized
1 8.8

Giving off light without heat after being in light, like glow in the dark paint

refers generally to light emission without heat not specifying slow chemistry
luminiferous
vsluminescent
  • Specialized
1 9.9

To give off light or let light pass through

is about emitting light without heat rather than technical transmission

Antonyms

1.0

With little or no light and not bright

Compounds

luminescent screen
  • Specialized
6.9

The inside surface of an old television that lights up to show images

How Bright

dazzling
2 3.1
bright
459 1.0
luminescent
  • Specialized
5 7.0
dim
62 1.0

Surface Forms

luminescent positive

Morphology

luminescent = luminesce (transparent) = lumin + esce + nt

Formed from the verb 'luminesce' by the adjectival ending (yielding '-escent'/'-nt'), so the meaning 'emitting light (without heat)' follows directly from the base.

Etymology

Luminescent comes from the root lumin meaning 'light' and the ending -escent meaning 'becoming', like in luminous or illuminate. So, something luminescent 'becomes light' and gives off light even without heat.