# radial

/ˈɹeɪdiəɫ/ (US) · /ɹˈeɪdɪəl/ (UK)

Source: https://englishreference.com/word/radial
Updated: 2026-08-08

## Senses

### 1. spreading from a center

adjective · CEFR C1 · Technical

arranged in straight lines that come out from a center point, like the spokes on a bicycle wheel.

For teachers: arranged like rays that radiate from, or converge to, a common center point.

- The city was built with a radial pattern of streets leading to the main square.
- The architect proposed a radial design for the new library, ensuring that all reading rooms were equidistant from the central circulation desk.

Usage: Often used to describe urban planning or geometric patterns.

### 2. anatomy/biology

adjective · CEFR C2 · Technical

relating to the radius bone in your arm or similar structures in plants and animals.

For teachers: relating to the radius bone of the forearm or exhibiting symmetry around a central axis in biological organisms.

- The doctor checked the patient's radial pulse at the wrist.
- Starfish exhibit radial symmetry, with their body parts arranged around a central disk rather than having a left and right side.

Usage: In medicine, it most frequently refers to the radial artery or nerve near the radius bone.

### 3. tire construction

adjective · CEFR B2 · Technical

a type of tire where the internal layers are arranged at a 90-degree angle to the direction of travel.

For teachers: relating to a pneumatic tire in which the ply cords are laid substantially at 90 degrees to the centerline of the tread.

- Most modern cars use radial tires because they last longer and provide a smoother ride.
- The transition from bias-ply to radial construction significantly improved vehicle fuel efficiency and cornering stability in the late twentieth century.

### 4. a radial tire

noun · CEFR B2

a tire that has a radial design.

For teachers: a pneumatic tire constructed with radial plies.

- He needed to buy a new set of radials before the winter started.
- The mechanic recommended a high-performance radial for the sports car to ensure better grip on wet surfaces.

## Examples

- The flower has a beautiful radial pattern.
- The city was designed with radial roads that connect the outer suburbs directly to the central square.
- In biology, radial symmetry allows organisms like starfish to interact with their environment equally from all directions, rather than having a distinct front and back.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.