球きゅう体たい

きゅ

う

た

い

Freq.FrequencyTop 20,000

Meanings

1

sphere; globe; orb

General term for a three-dimensional round object; used in everyday and scientific contexts.

地ち球きゅうは完かん全ぜんな球きゅう体たいではない。
The Earth is not a perfect sphere.

2

ball; solid sphere

Mathematical term for a solid spherical shape, as opposed to just the surface (球面).

数すう学がくでは、球きゅう体たいは球きゅう面めんとその内ない部ぶを含ふくむ。
In mathematics, a ball includes the spherical surface and its interior.

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Usage patterns

〈物もの〉は球きゅう体たいをしているsomething has a spherical shape
地ち球きゅうはほぼ完かん全ぜんな球きゅう体たいをしている。
The Earth is shaped almost like a perfect sphere.
球きゅう体たいを成なすto form a sphere
その水すい滴てきは表ひょう面めん張ちょう力りょくによって球きゅう体たいを成なす。
The water droplet forms a sphere due to surface tension.

Kanji

球ball, sphere
体body, substance, object

Related words

球きゅうN3sense 1
球体 emphasizes the geometric shape of a solid sphere, while 球 is a broader, more casual term often used in compounds like 野球 (baseball).
球きゅう状じょう sense 1
球体 refers to the sphere as an object itself, whereas 球状 describes something as being 'spherical in shape' (an adjectival/state term).

Don't confuse with

球きゅう面めん sense 2
球体 refers to the whole solid sphere, while 球面 refers only to its curved surface, not the interior volume.

Counted with

個こN5
counter for small objects; counter for pieces · counter for military units · individual; one person · counter for years of age difference; counter for school years

Word family

糸し球きゅう体たい
glomerulus
糸し球きゅう体たい嚢のう
glomerular capsule; Bowman's capsule

Etymology

Compound of 球 (kyū, 'sphere') and 体 (tai, 'body'), literally 'sphere body'. The exact historical derivation is uncertain, but the word follows standard Sino-Japanese word formation patterns.