radiant

Adj

1. Radiating light and/or heat.
2. Emitted as radiation.
3. (figuratively) Beaming with vivacity and happiness.
4. (figuratively) Strikingly beautiful.
5. Emitting or proceeding as if from a center.
6. Giving off rays.
7. Having a ray-like appearance, like the large marginal flowers of certain umbelliferous plants; said also of the cluster which has such marginal flowers.

Noun

1. A point source from which radiation is emitted.
2. The apparent origin, in the night sky, of a meteor shower.
3. A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.

Pronounced as (IPA)

/ˈɹeɪ.di.ənt/

Etymology

Inherited from Middle English: radyant

In summary

From Middle English radyant, from Latin radiāns, radiantis, present participle of radiāre (“to emit rays or beams”).

Synonyms

bright

shining

brilliant

luminous

glowing

refulgent

effulgent

lustrous

resplendent

splendid

beamy

beaming

light

shiny

gleaming

dazzling

shine

incandescent

glossy

glorious

fulgent

radiative

radiating

beam

awesome

light up

glaring

luster

nitid

opening

phosphorescent

polished

radiance

rosy

serene

sheeny

shimmering

silvery

sleek

sparkling

splendent

starry

stunning

translucent

unclouded

undimmed

unfrosted

vibrant

vivid

be bright