black aurora
black aurora · black auroras · black aurorae
A structure that is embedded in a uniformly bright aurora, where its optical emission…A structure that is embedded in a uniformly bright aurora, where its optical emission is significantly reduced, presenting as either patches or arcs that mainly drift eastwards.
Meaning
1 sensesA structure that is embedded in a uniformly bright aurora, where its optical emission is significantly reduced, presenting as either patches or arcs that mainly drift eastwards.
Forms
plural: black auroras / black aurorae| Singular | black aurora |
|---|---|
| Plural | black auroras / black aurorae |
regular
Lessons for this word
1 lessons- A1Plural nouns — Because its plural is irregular