radial

adjective
ra·​di·​al | \ ˈrā-dē-əl How to pronounce radial (audio) \

Definition of radial

 (Entry 1 of 2)

1 : arranged or having parts arranged like rays
2a : relating to, placed like, or moving along a radius
b : characterized by divergence from a center
3 : of, relating to, or adjacent to a bodily radius
4 : developing uniformly around a central axis

radial

noun

Definition of radial (Entry 2 of 2)

1a : a radial part
b : ray
2 : a body part (such as an artery) lying near or following the course of the radius
3 : a pneumatic tire in which the ply cords that extend to the beads are laid at approximately 90 degrees to the centerline of the tread

called also radial-ply tire, radial tire

Keep scrolling for more

Other Words from radial

Adjective

radially \ ˈrā-​dē-​ə-​lē How to pronounce radially (audio) \ adverb

Examples of radial in a Sentence

Adjective the radial form of a starfish
Recent Examples on the Web: Adjective Astronomers detected the planet using the radial velocity method. Cnn.com Wire Service, The Mercury News, "‘Wrecking ball’ of a planet almost avoids discovery because of strange orbit," 28 Aug. 2019 Astronomers detected the planet using the radial velocity method. Cnn.com Wire Service, The Mercury News, "‘Wrecking ball’ of a planet almost avoids discovery because of strange orbit," 28 Aug. 2019 The researchers were looking for changes in the radial velocity of the star. John Wenz, Popular Mechanics, "This Exoplanet Has the Weirdest Orbit We've Ever Seen," 27 Aug. 2019 Astronomers detected the planet using the radial velocity method. Cnn.com Wire Service, The Mercury News, "‘Wrecking ball’ of a planet almost avoids discovery because of strange orbit," 28 Aug. 2019 Astronomers detected the planet using the radial velocity method. Ashley Strickland, CNN, "Giant exoplanet is 'like a wrecking ball,' astronomers say," 27 Aug. 2019 The radial velocity method is more based on gravity and the Doppler effect, in which light increases or decreases in frequency as a source and observed object move toward or away from each other. Ashley Strickland, CNN, "Second exoplanet found around a curious star," 19 Aug. 2019 These two planets, GJ 357 c and d, were found using the radial velocity method: by looking at the slight wobble in the star’s motions caused by its planets’ tiny gravitational tugs. Los Angeles Times, "Astronomers found a planet where life might thrive, and it’s just 31 light-years away," 31 July 2019 Like many American cities, Houston is encircled by rings of highways—nine major radial freeways, three ring freeways, and a 180-mile fourth outer ring on the way. Patrick Sisson, Curbed, "Houston’s $7 billion solution to gridlock is more highways," 5 Aug. 2019 Recent Examples on the Web: Noun Andretti first credits the slicks, and then changing from a cross-ply construction to radials. Tim Newcomb, Popular Mechanics, "Gaining Speed: A History of the Indy 500 Racing Tire," 24 May 2019 There’s a sort of radial set up to the room, that big gem in the middle was basically a topper on a giant, carpeted wedding cake, which seemed the ideal architecture for some sort of romantic ritual. Lucy Boyle, The Cut, "Farewell to the Most Sparkly Sacred Place in New York," 30 Oct. 2017 The bias ply is easier to retread while the radial is lighter. John Cox, USA TODAY, "Ask the Captain: How pilots respond to a blown tire," 22 Oct. 2017 Line lock helps the driver warm the rear drag radials, a special air-conditioning circuit chills the intercooler, and a trans brake makes for easy launches and helps the Demon perform the briefest of wheelies. Car and Driver, "New Cars for 2018: Chrysler, Dodge, and Ram," 10 Oct. 2017 The car comes on four drag radials, but the eight-speed ZF 8HP automatic turns only the rear wheels. K.c. Colwell, Car and Driver, "2018 Dodge Challenger SRT Demon," 20 July 2017 Of the more interesting highlights, a few involve the car’s specialized Nitto drag radials. Davey G. Johnson, Car and Driver, "Dodge Demands Owners Sign Waiver When Ordering Demon," 23 June 2017

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

See More

First Known Use of radial

Adjective

1570, in the meaning defined at sense 1

Noun

1872, in the meaning defined at sense 1a

History and Etymology for radial

Adjective

Medieval Latin radialis, from Latin radius ray

Keep scrolling for more

Learn More about radial

Statistics for radial

Last Updated

24 Oct 2019

Time Traveler for radial

The first known use of radial was in 1570

See more words from the same year

Keep scrolling for more

More Definitions for radial

radial

adjective
How to pronounce radial (audio)

English Language Learners Definition of radial

 (Entry 1 of 2)

: arranged or having parts arranged in straight lines coming out from the center of a circle

radial

noun

English Language Learners Definition of radial (Entry 2 of 2)

: a type of strong tire in which cords underneath the rubber run across the tire's surface

radial

adjective
ra·​di·​al | \ ˈrād-ē-əl How to pronounce radial (audio) \

Medical Definition of radial

 (Entry 1 of 2)

1 : arranged or having parts arranged like rays
2 : of, relating to, or situated near the radius or the thumb side of the hand or forearm the radial aspect of the hand
3 : developing uniformly around a central axis radial cleavage of an egg

Other Words from radial

radially \ -​ē-​ə-​lē How to pronounce radially (audio) \ adverb

radial

noun

Medical Definition of radial (Entry 2 of 2)

: a body part (as an artery) lying near or following the course of the radius

Keep scrolling for more

More from Merriam-Webster on radial

Spanish Central: Translation of radial

Nglish: Translation of radial for Spanish Speakers

Britannica English: Translation of radial for Arabic Speakers

Comments on radial

What made you want to look up radial? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to engage in dissolute behavior

Get Word of the Day daily email!

Test Your Vocabulary

Pass the Little Ribbons: A Pasta Word Quiz

  • rotelle pasta
  • Match the pasta to its meaning in English: Rotelle
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!