radiant
- 01 B2 Upper Intermediate
adj.sending out light or heat in a way that is bright and warm.
adj.emitting light or heat through radiation; shining brightly.
Simple“The radiant sun warmed the beach early in the morning.”
In context“The radiant heat from the fireplace was enough to warm the entire living room despite the freezing temperatures outside.”
- 02 B2 Upper Intermediate
adj.looking very happy, healthy, or full of love.
adj.manifesting great joy, love, or health through one's facial expression or physical appearance.
Simple“She looked radiant in her white dress on her wedding day.”
In context“The winner gave a radiant smile to the cameras, clearly overwhelmed by the unexpected victory.”
- 03 C1 Advanced
adj.describing energy that travels in waves, like heat from a heater.
adj.transmitted or emitted by radiation rather than conduction or convection.
Simple“The new heating system uses radiant energy to keep the floors warm.”
In context“Scientists measured the radiant flux of the star to determine its total energy output over the course of a year.”
Synonyms - 04 C2 Proficiency
n.the point in the sky where a group of shooting stars seems to start.
n.the point in the celestial sphere from which the paths of meteors in a shower appear to originate.
Simple“To see the meteors, look toward the radiant in the constellation Perseus.”
In context“Observers noted that the radiant of the meteor shower shifted slightly as the Earth moved through the debris field.”
“He also said putting an e-vehicle near a radiant heat source can cause an explosion.”
From Middle English radyant, from Latin radiāns, radiantis, present participle of radiāre (“to emit rays or beams”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.