Other forms: radiating, radiated, radiates
To radiate is to send out heat, light or feeling in all directions. Radiate heat, radiating outward, radiate confidence.
The all-directions part is what the word carries — radiating is spreading from a centre, which is why roads radiate from a hub and pain radiates down a limb. In physics, everything above absolute zero radiates energy. Figuratively somebody can radiate calm or menace. Note radiation, radiator; and that the Latin radius means a spoke, which is exactly the image.
1verbradiateTo send out heat or light in all directions.
“The old stove radiated heat into every corner of the kitchen.”
2verbgiveTo give off a feeling strongly.
“The bride radiated happiness as she walked down the aisle.”
radiate is a sending out from a centre.
Latin radiare comes from radius, a spoke or ray. Radius, radio and ray come from the same spoke.
Latin
radiātus
English, today
radiate
Built from
Latin radiātus, perfect passive participle of radiō (“to radiate, furnish with spokes, give out rays, radiate, shine”) (see -ate), from radius (“a spoke, ray”).
Etymology from Wiktionary, CC BY-SA