1

radiate

verb ra·di·ate \ ˈrā-dē-ˌāt \
Updated on: 24 Nov 2017

Definition of radiate

radiated; radiating
intransitive verb
1 : to proceed in a direct line from or toward a center
2 : to send out rays : shine brightly
3 a : to issue in or as if in rays
b : to evolve by adaptive radiation
transitive verb
1 : to send out in or as if in rays
3 : to spread abroad or around as if from a center

Examples of radiate in a Sentence

  1. The pain was radiating down my arm.

  2. The sun radiates heat and light.

  3. Heat radiates from the sun.

Recent Examples of radiate from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radiate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of radiate

Latin radiatus, past participle of radiare, from radius ray


2

radiate

adjective ra·di·ate \ ˈrā-dē-ət , -ˌāt \

Definition of radiate

: having rays or radial parts: such as
a : having ray flowers
b : characterized by radial symmetry : radially symmetrical

radiately

adverb

First Known Use of radiate

1668


RADIATE Defined for English Language Learners

radiate

verb

Definition of radiate for English Language Learners

  • : to go out in a direct line from a central point or area

  • : to move in a specified direction from a source

  • : to send out (something, such as heat or energy) in rays


RADIATE Defined for Kids

radiate

verb ra·di·ate \ ˈrā-dē-ˌāt \

Definition of radiate for Students

radiated; radiating
1 : to send out rays : shine The sun was radiating in the sky.
2 : to come forth in the form of rays
  • Light radiates from shining bodies.
3 : to go out in a direct line from a center
  • Spokes radiate from the center of the wheel.
4 : to spread around from or as if from a center
  • Word radiated that Royce McNabb had sent Ina-Rae Gage a valentine.
  • —Richard Peck, A Year Down Yonder
5 : to show very clearly
  • She radiates confidence.

Medical Dictionary

1

radiate

verb ra·di·ate \ ˈrād-ē-ˌāt \

medical Definition of radiate

radiated; radiating
intransitive verb
: to issue in or as if in rays : spread from a central point
  • back pain radiating to both upper legs
  • —Tony Miksanek
transitive verb

2

radiate

adjective ra·di·ate \ ˈrād-ē-ət, -ē-ˌāt \

medical Definition of radiate

1 : having rays or radial parts
2 : characterized by radial symmetry : radially symmetrical


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