MEANING
The point in a solar orbit at which an object is nearest the sun.
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Words that belong together
- reach perihelion
- perihelion passage
On the page
The comet shed a bright tail as it approached perihelion.
The probe folded its exposed instruments before perihelion passage.
Opposite meanings
Related words
Word forms
- Base
- perihelion
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Usage notes
Primary category: sci-fi. Forms: Singular: perihelion; plural: perihelia. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.
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