大宇宙|だいうちゅうdaiuchuu

1. nounmacrocosmos; macrocosm; the universe; the cosmos

• Synonym宇宙うちゅうNeutralThe standard, most versatile word for the universe and space, as in 「宇宙旅行」; 「大宇宙」 stresses the universe as a whole set against the human body as a microcosm.
• SynonymコスモスWrittenLoanword for an ordered cosmos; in everyday use it more often means the cosmos flower. 「大宇宙」 leans philosophical.
• SynonymユニバースWrittenLoanword for the whole universe or the world; mostly seen in names and titles. In everyday speech say 「宇宙」.
• SynonymマクロコスモスWrittenLoanword for the macrocosm, used as a philosophical term; essentially synonymous with 「大宇宙」.
• Synonym森羅万象しんらばんしょうWrittenCovers all things and phenomena in the universe, with the focus on everything that exists; 「大宇宙」 focuses on the whole of space.
• Synonym万有ばんゆうWrittenWritten-style word for all things in the universe; today mostly encountered in 「万有引力」.
• Synonym六合りくごうWrittenAn old Chinese-derived term for heaven, earth and the four directions; rarely used — in modern speech say 「宇宙」.
• Related天地てんちNeutralMeans heaven and earth, and by extension the whole universe or world; what defines 「大宇宙」 is its contrast with 「小宇宙」.
• Related万物ばんぶつWrittenRefers to all things in the world, as in 「万物の霊長」; 「大宇宙」 emphasizes space rather than the things in it.
• Antonym小宇宙しょううちゅうWrittenThe antonym: a metaphor for the human body or anything forming a self-contained inner world, set against 「大宇宙」.

In everyday speech, 「宇宙」 is the default. Use 「大宇宙」 or 「マクロコスモス」 when contrasting the universe with the human body as a microcosm or stressing it as a whole; 「森羅万象」 for all things in existence; 「小宇宙」 is the antonym for the body seen as a world in itself.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 人間にんげん（人体じんたい）を小宇宙しょううちゅうに例たとえるのに対たいして宇宙うちゅうそのもの。