結合|けつごうketsugou[0]heiban (flat)

1. noun, suru verb, transitive verb, intransitive verbcombination; union; joining; linking; coupling
   これらの州しゅうは結合けつごうして１つの国くにになった。↗

   These states were united into one nation.
2. noun, suru verb, intransitive verb, chemistrybond
3. noun, computingjoin (in relational algebra)

• Synonym合同ごうどうWrittenWritten term for doing something jointly or merging, as in 「合同練習」; 「結合」 stresses two or more elements being tightly bound together.
• Synonym合併がっぺいWrittenMerging of companies, towns, or villages into a single organization; 「結合」 covers the binding of elements and is not limited to organizations.
• Synonym連結れんけつWrittenLinking things into one chain, e.g. train cars or company accounts as in 「連結決算」; 「結合」 stresses becoming one integrated whole.
• Synonym合体がったいNeutralMerging into a single body, like robots combining; 「結合」 stresses the binding between elements.
• Synonym接合せつごうWrittenTechnical word for joining or welding objects together; 「結合」 stresses elements combining into a whole.
• Synonym連合れんごうNeutralAlliance or federation of groups and organizations, as in 「国際連合」; 「結合」 stresses the binding of elements.
• Synonym接続せつぞくNeutralConnecting lines or devices, or changing trains; 「結合」 stresses elements combining into one integrated whole.
• Synonym合流ごうりゅうNeutralRivers converging, or groups and parties joining up; 「結合」 stresses elements being tightly bound together.
• Synonym複合ふくごうNeutralSeveral elements forming a composite or compound; 「結合」 stresses the mutual binding between elements.
• Synonym合成ごうせいNeutralChemical synthesis or composite images; 「結合」 focuses on the binding of elements itself.
• Synonym併合へいごうWrittenAnnexing territory or merging organizations; 「結合」 stresses the binding of elements.
• Synonym融合ゆうごうNeutralFusing or melting together until the parts are indistinguishable; 「結合」 stresses the binding itself.
• Synonym化合かごうWrittenChemical combination of elements; 「結合」 is broader and also covers chemical bonds.
• SynonymつなぐNeutralEveryday verb for connecting or tying things; 「結合」 is the more formal term.
• Synonym合わさるあわさるNeutralIntransitive verb for things coming together or a wound healing; 「結合」 is the more formal Sino-Japanese term.
• Synonym合一ごういつWrittenWritten word for uniting into one, as in 「知行合一」; 「結合」 is the more common choice.
• Synonym一体化いったいかNeutralIntegrating separate things into one; 「結合」 stresses the binding between elements.
• Related混合こんごうNeutralMixing things together, with the components not necessarily bonded; 「結合」 stresses a firm bond.
• Related混成こんせいWrittenMixed formation, as in 「混成チーム」; 「結合」 stresses the binding of elements.
• Related組み合わせるくみあわせるNeutralNative verb for putting things together or pairing them up; 「結合（する）」 is the more formal Sino-Japanese term.
• Related結びつけるむすびつけるNeutralNative verb for tying things together or linking them by association; 「結合」 is the more formal, written term.
• Related合わすあわすNeutralVerb for matching things or fitting them together; 「結合」 stresses the binding of elements.
• Related混ぜるまぜるNeutralEveryday verb for mixing or stirring; 「結合」 stresses a firm bond.
• Related配合はいごうNeutralBlending ingredients in set proportions, as in a formulation; 「結合」 stresses the binding itself.
• Relatedつなぎ合わせるつなぎあわせるNeutralVerb for joining pieces together, like piecing fragments; 「結合」 is more formal.
• Related合するがっするWrittenWritten word for coming together or combining; 「結合」 is more common.
• Related一緒になるいっしょになるCasualColloquial phrase for coming together or getting married; 「結合」 is the more formal option.
• Antonym分離ぶんりNeutralAntonym: separating things apart; the opposite of 「結合」 with its tight binding.
• Antonym切断せつだんNeutralAntonym: cutting or severing a connection; the opposite of the linking 「結合」.
• Antonym分解ぶんかいNeutralAntonym: taking something apart or breaking it down; the opposite of 「結合」 into a whole.

Use 「結合（する）」 when elements, organizations, or relations are bound into one whole, as in 「分子の結合」 or 「結合組織」. For mergers of companies or municipalities pick 「合併」; for connecting lines or devices 「接続」; for linking things in a chain 「連結」; for blending into one inseparable whole 「融合」; and for the opposite, 「分離」. In everyday speech, native verbs like 「組み合わせる」 or 「繋ぐ」 sound less stiff, while 「混合」 and 「混ぜる」 cover mere mixing without a firm bond.

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

1. 複数ふくすうのものが結むすびて一ひとつになること。