# supernova

/ˌsupɝˈnoʊvə/ (US) · /sˈuːpənˈəʊvɐ/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/supernova
Updated: 2026-05-08

## Definition

a massive star that explodes at the end of its life. This explosion is incredibly bright and can briefly shine more than an entire galaxy.

For teachers: the cataclysmic explosion of a massive star, resulting in a sudden and immense increase in luminosity. Occurs when a star exhausts its nuclear fuel and collapses under its own gravity.

## Examples

- The telescope captured a clear image of the supernova.
- Astronomers observed a distant supernova that appeared as a bright new point of light in the night sky.
- The heavy elements necessary for life were forged in the intense heat of a supernova and scattered across the universe by the resulting shockwave.

## Usage notes

- The plural form can be either 'supernovas' or 'supernovae'.

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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.