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



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

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Other Words from radial


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

Examples of radial in a Sentence

Adjective the radial form of a starfish
Recent Examples on the Web: Adjective Whether symmetrical or asymmetrical, the image should have a sense of balance visually and a radial arrangement as viewed from a central point. oregonlive, 4 May 2022 The propellers, all four, are almost 17 feet across, and they’re attached to 2,400-hp Wright R-3350-24WA 18-cylinder radial engines, which give it a top speed of 225 mph and 190-mph cruise speed with a 4,900-mile range. J. George Gorant, Robb Report, 29 Mar. 2022 It's estimated that Proxima Centauri's variability can often look like a radial velocity signal equivalent to a meter per second. John Timmer, Ars Technica, 10 Feb. 2022 But this is the first time the radial velocity method has been used to find such a lightweight planet. Ashley Strickland, CNN, 10 Feb. 2022 In the paper, Sneppen says that photons orbiting above a certain radial coordinate circle the black hole outwards to infinity. Joshua Hawkins, BGR, 24 Jan. 2022 To recap, the Aurelia B20GT was the first car to ever be equipped with a V-6 and radial tires, which made it hugely ahead of its time. Rachel Cormack, Robb Report, 17 Nov. 2021 Raymond DeWalt invents the radial arm saw, an efficient power tool used for crosscuts of long boards, and a standard tool that remains in use today. Marc Bona, cleveland, 10 Jan. 2022 This radial way of looking at your career can help increase your compensation too. Jack Kelly, Forbes, 2 Nov. 2021 Recent Examples on the Web: Noun Instead only the most distal ones are homologous to digit bones; the proximal radials are homologous to the wrist bones and the long bones of the palm. John A. Long, Scientific American, 20 May 2020 Enter the panda’s pseudo-thumb, which is also composed of an enlarged radial sesamoid and cartilaginous extension, and is controlled by the same three muscles as in the aye-aye. National Geographic, 21 Oct. 2019 Andretti first credits the slicks, and then changing from a cross-ply construction to radials. Tim Newcomb, Popular Mechanics, 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, 30 Oct. 2017 The bias ply is easier to retread while the radial is lighter. John Cox, USA TODAY, 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, 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, 20 July 2017 Of the more interesting highlights, a few involve the car’s specialized Nitto drag radials. Davey G. Johnson, Car and Driver, 23 June 2017 See More

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.

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First Known Use of radial


1570, in the meaning defined at sense 1


1872, in the meaning defined at sense 1a

History and Etymology for radial


Medieval Latin radialis, from Latin radius ray

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Learn More About radial

Dictionary Entries Near radial



radial arm

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Statistics for radial

Last Updated

13 May 2022

Cite this Entry

“Radial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radial. Accessed 23 May. 2022.

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More Definitions for radial


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 radial (audio) \ adverb



Medical Definition of radial (Entry 2 of 2)

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

More from Merriam-Webster on radial

Nglish: Translation of radial for Spanish Speakers

Britannica English: Translation of radial for Arabic Speakers


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