radius
Syllables: ra·di·us/ˈɹeɪ.di.əs/
radius noun: the long bone in the forearm, on the side of the thumb.
Noun (1)
radius (plural radii or radiuses)
- The long bone in the forearm, on the side of the thumb.
- It is also obvious, and proved by experiment, that the rotatory motions observed in the hand proceed from the rotatory motions of the radius.1808, John Barclay, The Muscular Motions of the Human Body, →OCLC, page 396
- The lighter bone (or fused portion of bone) in the forelimb of an animal.
- One of the major veins of the insect wing, between the subcosta and the media; the vein running along the costal edge of the discal cell.
- Synonyms:
- R
- A line segment between any point of a circle or sphere and its center.
- Fatima claims to have visited all the bars within a five-mile radius of her Manhattan apartment.
- We start with spherical geometries. The two geometries on spheres of radiuses R₁ and R₂ are obviously identical if R₁ = R₂; moreover, the converse also holds.1994, Viacheslav V. Nikulin, Igor R. Shafarevich, translated by Miles Reid, Geometries and Groups, Springer, page 194
- The length of this line segment.
- This contribution reduces with increasing distance p from the emitting surface element dA, due to conservation of energy, as the wave energy distributed across the spherical wave front remains constant, while the radius increases during ...1998, Dieter Schuocker, Handbook of the Eurolaser Academy, Springer Science & Business Media, →ISBN, page 51
- Anything resembling a radius, such as the spoke of a wheel, the movable arm of a sextant, or one of the radiating lines of a spider's web.
- […] I can do more with a Quadrant, Sextant or Octant, of 1 foot Radius, furniſhed with Teleſcopical Sights and Screws, then ^([sic]) can poſſibly be done with any other Inſtrument, furniſhed only with Common Sights, though 10, 20, 30, nay threeſcore foot Radius; […]1674, Robert Hooke, Animadversions on the Firſt Part of the Machina Coelestis of the […] Aſtronomer Johannes Hevelius […] , page 43
- The minimum eccentricity of any vertex, for a given graph.
Verb
radius (third-person singular simple present radiuses, present participle radiusing, simple past and past participle radiused)
- To give a rounded edge to.
- A comfortable grip is ensured by smoothing the surface of the handle and radiusing the edge.2014, Anil Mital, Anoop Desai, Anand Subramanian, Product Development, page 358
Noun (2) capitalized: RADIUS
RADIUS (uncountable)
- Initialism of Remote Authentication Dial-In User Service.
radius meaning in Hindi, Tamil, Marathi and Urdu
radius in Hindi
- line segment
- त्रिज्या trijyā
- length of this line segment
- त्रिज्या trijyā
radius in Tamil
- ஆரம், ஆரத்திற்கு
radius in Marathi
- line segment
- त्रिज्या trijyā
- length of this line segment
- त्रिज्या trijyā
radius in Urdu
- line segment
- رداس radās, نصف قطر nisf-qutr
More languagesFewer languages
- radius in Bengali
- ব্যাসার্ধ
- radius in Telugu
- రత్ని ratni, వ్యాసార్థము vyāsārthamu
- radius in Malayalam
- റേഡിയസ്, ആരം, ത്രിജ്യം
- radius in Kannada
- ಮುಂಗೈ ಮೂಳೆ muṅgai mūḷe, ತ್ರಿಜ್ಯ trijya
- radius in Punjabi
- ਰੇਡੀਅਸ reḍīasa
- radius in Gujarati
- ત્રિજ્યા trijyā
- radius in Odia
- ବ୍ଯ଼ାସାର୍ଦ୍ଧ, ବ୍ଯ଼ାସାର୍ଦ୍ଧଃ
- radius in Nepali
- त्रिज्या
- radius in Tagalog
- lihit
- radius in Arabic
- كُعْبُرَة kuʕbura, نِصْف قُطْر niṣf quṭr, شُعَاع šuʕāʕ
- radius in Malay
- radius, jejari
- radius in Indonesian
- radius, jari-jari
- radius in Persian
- زند زبرین zand-e zabarin, شعاع šo'â'
- radius in Thai
- รัศมี rát-sà-mǐi
- radius in Vietnamese
- xương quay, bán kính
- radius in Myanmar
- အချင်းဝက် a.hkyang:wak
Examples of radius in a sentence
- Typically, a hostile mob will add whenever it's within the aggro radius of a player.
- A degenerate circle, having radius zero, consists of a single point.
- The radius of the photon sphere is also the lower bound for any stable orbit.
Synonyms of radius
Forms of radius
| Noun | |
|---|---|
| plural | radii |
| plural | radiuses |
| Verb | |
| third-person singular present | radiuses |
| present participle | radiusing |
| past participle | radiused |
| past | radiused |
Origin of radius
Borrowed from Latin radius (“ray”). Doublet of ray.
Words formed from radius
- atomic radius
- blast radius
- Bohr radius
- circumradius
- covalent radius
- Debye radius
- distal radius
- Earth radius
- Einstein radius
- equiradiate
- exradius
- gyradius
- gyroradius
- Hill radius
- hydraulic radius
- hyperradius
- inradius
- interradius
- ionic radius
- metallic radius
- potato radius
- radian
- radion
- radius arm
- radius bar
- radius of action
- radius of convergence
- radius of curvature
- radius of gyration
- radius rod
- radius vector
- Roche radius
- Schwarzschild radius
- sight radius
- triradius
- van der Waals radius
Phrases with radius
Words that rhyme with radius
Questions about radius
- What does radius mean?
- Radius means the long bone in the forearm, on the side of the thumb.
- What is radius in Hindi?
- Radius in Hindi is त्रिज्या (trijyā). See Radius meaning in Hindi.
- What part of speech is radius?
- Radius can be a noun or a verb.
- How do you pronounce radius?
- Radius is pronounced /ˈɹeɪ.di.əs/.
- What is the plural of radius?
- The plural of radius is radii.
Words near radius in the dictionary
Source and license
Adapted from Wiktionary: radius (page history and authors); RADIUS (page history and authors); radius (Tamil, IndicTrans2 machine translation) (model and license); radius (Bengali, IndicTrans2 machine translation) (model and license); radius (Malayalam, IndicTrans2 machine translation) (model and license); radius (Odia, IndicTrans2 machine translation) (model and license); radius (Nepali, IndicTrans2 machine translation) (model and license). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-radius.ogg.
Cite this entry: “radius.” Word.ws, https://word.ws/radius. Based on Wiktionary, CC BY-SA 4.0.