What does "sphere" mean?
A surface in three dimensions consisting of all points equidistant from a center. .
Sphere
/sfɪɚ/ noun, verb
noun, verb ·Common ·Middle school level
Meaning at a glance
- Primary sense: A surface in three dimensions consisting of all points equidistant from a center. .
- Grammar: sphere is listed as noun, verb.
- Nearest alternatives: area, domain, field, academic discipline.
- Useful contrasts: cone, coning, conoid.
- Usage evidence: Our sphere of influence has expanded so much since then.
How to use "sphere"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "sphere" 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 "sphere" 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 "sphere" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "sphere" 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 "sphere" is acting as noun, verb 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 "area" 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 "sphere", 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 A surface in three dimensions consisting of all points equidistant from a center. .
- 2 any spherically shaped artifact wordnet
- 3 An object which appears to be bounded by a sphere; a round object, a ball.
"Of celestial bodies, first the sun, / A mighty sphere, he framed."
- 4 a particular aspect of life or activity wordnet
- 5 The celestial sphere: the edge of the heavens, imagined as a hollow globe within which celestial bodies appear to be embedded. archaic
"Though cold and darkness longer hang somewhere, / Yet Phoebus equally lights all the Sphere."
Show 11 more definitions
- 6 the apparent surface of the imaginary sphere on which celestial bodies appear to be projected wordnet
- 7 Any of the concentric hollow transparent globes formerly believed to rotate around the Earth, and which carried the heavenly bodies; there were originally believed to be eight, and later nine and ten; friction between them was thought to cause a harmonious sound (the music of the spheres). historical
"ſooner ſhall the Sun fall from his Spheare, Than Tamburlaine be ſlaine or ouercome."
- 8 the geographical area in which one nation is very influential wordnet
- 9 An area of activity for a planet; or by extension, an area of influence for a god, hero etc.
- 10 a three-dimensional closed surface such that every point on the surface is equidistant from the center wordnet
- 11 The region in which something or someone is active; one's province, domain. figuratively
"sphere of influence"
- 12 a solid figure bounded by a spherical surface (including the space it encloses) wordnet
- 13 The natural, normal, or proper place (of something).
"in one's sphere"
- 14 a particular environment or walk of life wordnet
- 15 The set of all points in three-dimensional Euclidean space (or n-dimensional space, in topology) that are a fixed distance from a fixed point .
- 16 The domain of reference of a proposition, subject, or predicate, or the totality of the particular subjects to which it applies. dated
"In point of fact, so often as we think a subject as partially included within the sphere of a predicate, eo ipso we think it as partially, that is, particularly, excluded therefrom."
Verb
- 1 To place in a sphere, or among the spheres; to ensphere. transitive
"The glorious planet Sol / In noble eminence enthroned and sphered / Amidst the other."
- 2 To make round or spherical; to perfect. transitive
"sphered Whole"
Synonyms
All synonymsExample
"Our sphere of influence has expanded so much since then."
Common questions
What is a synonym for "sphere"?
Common synonyms include: area, domain, field, academic discipline, academic specialty, acreage.
How do you use "sphere" in a sentence?
Our sphere of influence has expanded so much since then.
How do you pronounce "sphere"?
Pronounced /sfɪɚ/.
Etymology
From Middle English spere, from Old French sphere, from Late Latin sphēra, earlier Latin sphaera (“ball, globe, celestial sphere”), from Ancient Greek σφαῖρα (sphaîra, “ball, globe”), of unknown origin. Not related to superficially similar Persian سپهر (sepehr, “sky”) .