Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “radiate”

radiate

verb uk   /ˈreɪ.di.eɪt/ us  

radiate verb (PRODUCE HEAT/LIGHT)

[I or T] to produce heat and/or light, or (of heat or light) to be produced: The planet Jupiter radiates twice as much heat from inside as it receives from the Sun. A single beam of light radiated from the lighthouse.

radiate verb (EXPRESS)

[I or T] to show an emotion or quality, or (of an emotion or quality) to be shown or felt: He was radiating joy and happiness. Enthusiasm was radiating from her.

radiate verb (SPREAD)

[I + adv/prep] to spread out in all directions from a central point: Flows of lava radiated out from the volcano's crater. Just before the breeding season, these birds radiate outwards to warmer climates.
(Definition of radiate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of radiate?
Browse related topics

You are looking at an entry to do with Spreading and scattering, but you might be interested in these topics from the Giving and sharing topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “radiate” in other dictionaries

Word of the Day

for starters

used to say that something is the first in a list of things

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More