What does "aphelion" mean?
The point in the elliptical orbit of a comet, planet, or other astronomical object, where it is farthest from the Sun.
Aphelion
/əˈfiː.lɪ.ən/ noun
noun ·Rare ·Advanced level
Meaning at a glance
- Primary sense: The point in the elliptical orbit of a comet, planet, or other astronomical object, where it is farthest from the Sun.
- Grammar: aphelion is listed as noun.
- Nearest alternatives: aphelion distance, aphelions, apogee, circle.
- Useful contrasts: periapsis, perihelion, perihelion distance.
- Usage evidence: The aphelion is the point where an object in orbit around the Sun is furthest from the Sun.
How to use "aphelion"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "aphelion" carries the exact meaning, tone, and strength you need.
- Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.
Meaning check
- Does the word fit the sentence's grammar?
- Does it match the intended tone rather than only the dictionary definition?
- Would a simpler synonym be clearer for the reader?
- Is there enough surrounding context to prevent ambiguity?
Source and review context
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "aphelion" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Before you rely on this definition
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "aphelion" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "aphelion" with a nearby alternative so the final choice matches both meaning and reader expectation.
Compare nearby meanings
- Use synonyms when you need a softer, stronger, simpler, or more specific word.
- Use antonyms to check the boundary of the meaning and avoid accidental contrast.
- Use the example sentence to confirm the word behaves naturally in context.
- Keep the original wording when a replacement adds complexity without improving precision.
Definition decision workflow
1. Identify the role
Check whether "aphelion" is acting as noun in your sentence. A definition is only useful when the grammar matches the way the word is being used.
2. Test the nearest option
Compare it with "aphelion distance" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
3. Confirm with context
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Final meaning check
Before publishing a sentence with "aphelion", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
Definitions
Noun
- 1 The point in the elliptical orbit of a comet, planet, or other astronomical object, where it is farthest from the Sun. also, figuratively
"[I]t follows from the theory of gravity, that the aphelia of Mercury, Venus, the Earth, and Mars, slightly progress."
- 2 apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun wordnet
Synonyms
All synonymsAntonyms
Example
"The aphelion is the point where an object in orbit around the Sun is furthest from the Sun."
Common questions
What is a synonym for "aphelion"?
Common synonyms include: aphelion distance, aphelions, apogee, circle, distance at aphelion, ecliptic.
How do you use "aphelion" in a sentence?
The aphelion is the point where an object in orbit around the Sun is furthest from the Sun.
How do you pronounce "aphelion"?
Pronounced /əˈfiː.lɪ.ən/.
Etymology
From New Latin aphēlium (whence English aphelium, now displaced) + -ion (used in the names of other apsides). Aphelium was formed from Ancient Greek ἀπο- (apo-, prefix meaning ‘away, from, off’) + ἥλῐος (hḗlĭos, “the sun”) (ultimately from Proto-Indo-European *sóh₂wl̥ (“the sun”)), modelled after New Latin apogaeum (“apogee”). The plural form aphelia is from aphelion + -a (plural form of the suffix -on).