adj · noun · 15 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ˈɹeɪdi.əl/
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:R EY1 D IY0 AH0 L
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Arranged like rays that radiate from, or converge to, a common centre.
Definition source: English Wiktionary via Wiktextract
Examples
The spokes on most modern bicycle wheels are tangential to the hub rather than radial.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Of, or relating to a radius (line joining to a geometric centre).
Definition source: English Wiktionary via Wiktextract
Topics: geometry, mathematics, sciences
Examples
What is the relationship between arc length and radial length?
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
Of, or relating to a radius (line joining to a geometric centre).
Moving or acting along a radius.
Definition source: English Wiktionary via Wiktextract
Topics: geometry, mathematics, sciences
Examples
radial velocity
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
adj
Meaning 4
Of, or relating to the radius bone.
Definition source: English Wiktionary via Wiktextract
Topics: anatomy, medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
adj
Meaning 5
Of, or relating to the radius (vein), and/or the wing areas next to it.
Definition source: English Wiktionary via Wiktextract
Topics: biology, entomology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
adj
Meaning 6
Developing uniformly on all sides.
Definition source: English Wiktionary via Wiktextract
Topics: biology, botany, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
adj
Meaning 7
Having reinforcing cords placed in parallel across the tyre at 90 degrees to the direction of travel, especially as contrasted with cross-ply; see also radial tyre.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
noun
Meaning 8
An item in a radial configuration, such as a spoke of a wheel.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
9
noun
Meaning 9
An item in a radial configuration, such as a spoke of a wheel.
One of a set of earthing wires arranged radially around the base of a wireless antenna.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
10
noun
Meaning 10
A radial tire / radial tyre.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
11
adjective
Meaning 11
issuing in rays from a common center; relating to rays of light
Definition source: Princeton WordNet 3.0
Examples
radial heat
Meaning relationships
Synonyms: none provided
Antonyms: none provided
12
adjective
Meaning 12
relating to or moving along or having the direction of a radius
Definition source: Princeton WordNet 3.0
Examples
radial velocity
Meaning relationships
Synonyms: none provided
Antonyms: none provided
13
adjective
Meaning 13
relating to or near the radius
Definition source: Princeton WordNet 3.0
Examples
the radial aspect of the forearm
Meaning relationships
Synonyms: none provided
Antonyms: none provided
14
adjective satellite
Meaning 14
arranged like rays or radii; radiating from a common center
Definition source: Princeton WordNet 3.0
Examples
radial symmetry
a starlike or stellate arrangement of petals
many cities show a radial pattern of main highways
Meaning relationships
Synonyms: stellate, radiate
Antonyms: none provided
15
noun
Meaning 15
pneumatic tire that has radial-ply casing
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: radial tire, radial-ply tire
Antonyms: none provided
Broader terms: pneumatic tire, pneumatic tyre
History
Etymology
From Medieval Latin radiālis (“radial”), from Latin radius. By surface analysis, radius + -al.
Across languages
Translations
34 source translations are retained for this English entry.
Bulgarian:
радиален
(radialen)
— arranged like rays that radiate from, or converge to a common center
Catalan:
radial
— arranged like rays that radiate from, or converge to a common center
Czech:
paprsčitý
— arranged like rays that radiate from, or converge to a common center
Czech:
paprskovitý
— arranged like rays that radiate from, or converge to a common center
Czech:
radiální
— arranged like rays that radiate from, or converge to a common center
Finnish:
säteittäinen
— arranged like rays that radiate from, or converge to a common center
Finnish:
säde-
— arranged like rays that radiate from, or converge to a common center
Finnish:
säteittäis-
— arranged like rays that radiate from, or converge to a common center
Finnish:
säteis-
— arranged like rays that radiate from, or converge to a common center
Finnish:
sädemäinen
— arranged like rays that radiate from, or converge to a common center
Finnish:
radiaali
— arranged like rays that radiate from, or converge to a common center
Finnish:
radiaalinen
— arranged like rays that radiate from, or converge to a common center
French:
radial
— arranged like rays that radiate from, or converge to a common center
German:
strahlenförmig
— arranged like rays that radiate from, or converge to a common center
German:
strahlig
— arranged like rays that radiate from, or converge to a common center
German:
radial
— arranged like rays that radiate from, or converge to a common center
Greek:
ακτινοειδής
(aktinoeidís)
— arranged like rays that radiate from, or converge to a common center
Hindi:
त्रिज्यीय
(trijyīya)
— arranged like rays that radiate from, or converge to a common center
Occitan:
radial
— arranged like rays that radiate from, or converge to a common center
Portuguese:
radial
— arranged like rays that radiate from, or converge to a common center
Romanian:
radial
— arranged like rays that radiate from, or converge to a common center
Russian:
радиальный
(radialʹnyj)
— arranged like rays that radiate from, or converge to a common center
Russian:
лучевой
(lučevoj)
— arranged like rays that radiate from, or converge to a common center
Spanish:
radial
— arranged like rays that radiate from, or converge to a common center
Swedish:
radiell
— arranged like rays that radiate from, or converge to a common center
Bulgarian:
радиален
(radialen)
— moving along a radius
Portuguese:
radial
— moving along a radius
Russian:
радиальный
(radialʹnyj)
— moving along a radius
Bulgarian:
радиусов
(radiusov)
— of, or relating to the radius bone
Catalan:
radial
— of, or relating to the radius bone
Finnish:
värttinäluu-
— of, or relating to the radius bone
Russian:
лучевой
(lučevoj)
— of, or relating to the radius bone