Korean Dictionary
How to say "Sphere" in Korean
“Sphere” in Korean is 구 (pronounced "Gu").
구
Gu
Usage & Context
Gu is the Korean word for sphere. Spheres are three-dimensional shapes used in Korean design and art. They represent wholeness and perfection.
Example Sentence
구 모양의 공이 있어요.
There is a sphere-shaped ball.
How to use 구 naturally
Quick answer
The Korean word for “Sphere” is 구, romanized as Gu.
Usage tip
Learn this word together with a complete Korean sentence. Meaning often depends on particles, politeness level, and word order.
Common mistake
Do not rely only on the English meaning. Read the Korean example sentence and notice the particles, word order, and politeness level around 구.
Pronunciation Guide
구 (gu) sounds exactly like 'goo' in 'goose'. It's a simple, single syllable.
More Example Sentences
Explaining a scientific fact.
지구는 거대한 구 모양이에요.
The Earth is a giant sphere.
Describing holiday decorations.
크리스마스 트리에 구 모양 장식을 달았어요.
We hung sphere-shaped ornaments on the Christmas tree.
Describing an object's shape.
이 구슬은 완벽한 구 형태를 가지고 있어요.
This marble has a perfect spherical form.
Cultural Context
The sphere (구) represents completeness, perfection, and infinity in many cultures, including Korean. In traditional Korean art and philosophy, the circle (원, won) is a powerful symbol of harmony and the cosmos, and the sphere extends this concept into three dimensions. While '구' itself is a technical term for the geometric shape, the underlying concept of roundness and wholeness is deeply embedded in Korean aesthetics, from moon jars (달항아리, dalhangari) to the concept of the universe.
Editorial note
We review entries like 구 for pronunciation, example sentence fit, and learner mistakes so the page answers more than a direct dictionary lookup.
Reviewed by Min-jung Park, Korean Language Teacher. Updated May 31, 2026. See our editorial standards.
Common Phrases
구 모양
Sphere shape.
구의 부피
Volume of a sphere.
구 형태
Spherical form.
Related Expressions
원
won
Circle (2D equivalent)
원형
wonhyeong
Circular shape
구체
guche
Sphere/globule (more formal/scientific)
공
gong
Ball (common spherical object)
More Colors and Shapes Words
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