# coronal

/kɝˈoʊnəɫ/ (US) · /kˈɒɹɒnəl/ (UK) · CEFR C2 · Adjective

Source: https://englishreference.com/word/coronal
Updated: 2026-10-14

## Definition

relating to a crown-like ring or top part. You see it in words about the sun's outer glow or a scan that splits the body into front and back.

For teachers: pertaining to a corona, a crown-like ring or upper structure. Most often describes the sun's outer atmosphere or an anatomical plane dividing front from back.

## Examples

- The dentist checks the coronal part of the tooth.
- The doctor showed the coronal scan that divides the brain into front and back sections.
- Solar physicists track coronal holes to predict high-speed wind streams that can disturb satellites and power grids on Earth.

## Synonyms

annular, frontal, ringlike

## Usage notes

- Typically placed before the noun it modifies, as in 'coronal plane' or 'coronal mass ejection'.

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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.