接合|せつごうsetsugou[0]heiban (flat)

1. noun, suru verb, transitive verbunion; joining
   石いしの塊かたまりはセメントで接合せつごうされた。↗

   The blocks of stone were jointed with cement.
2. noun, suru verb, intransitive verb, biologyconjugation

• Synonym結合けつごうNeutralWider in scope: two or more things uniting into one — chemical bonds, organizations, elements. 「接合」 is specifically joining two parts at their joint.
• Synonym連結れんけつWrittenWritten style. Linking things one after another, as in 「車両の連結」; stresses serial coupling, not the strength of the joint.
• Synonym接続せつぞくNeutralAbout a connection being open or linked, as in 「インターネット接続」; also used for soldering wires. 「接合」 stresses two parts becoming one at the joint.
• SynonymつなぐNeutralThe most general word for connecting or tying, as in 「手を繋ぐ」. 「接合」 is technical, for parts joined at a joint.
• Synonym合わさるあわさるNeutralTo come together: objects fitting snugly, or forces and opinions uniting. 「接合」 implies deliberately joining parts.
• Related結びつけるむすびつけるNeutralTo tie or to associate, as in 「原因と結果を結びつける」. Leans toward abstract links; 「接合」 is about physical parts joining.
• Related接するせっするWrittenWritten style: to touch or border on, as in 「国境を接する」. Means being adjacent, not fastening two things together.
• Related合流ごうりゅうWrittenWritten style: rivers merging or people and groups joining up, flowing into one. 「接合」 is attaching two parts to each other.
• Related交わるまじわるNeutralTo cross or intersect, also to associate, as in 「線が交わる」. Focuses on the crossing point; 「接合」 means joining into one body.
• Relatedつなぎ合わせるつなぎあわせるNeutralColloquial: joining several pieces end to end, as in 「布をつなぎ合わせる」. Suggests piecing together; 「接合」 is the technical term.
• RelatedつなげるNeutralTo connect something, as in 「電話を繋げる」. Suggests keeping things linked or continuous, without focus on the joint.
• Related継ぎ合わせるつぎあわせるNeutralTo piece fragments together, as in 「破片を継ぎ合わせる」. Suggests patching or mending rather than a technical join.
• Related結び合わせるむすびあわせるWrittenWritten style: tying things together with string, or correlating them. Not used for welding or splicing parts.
• Related合するがっするFormalFormal and rare, slightly literary: to merge or combine. 「接合」 is specifically about parts being joined.
• Related接ぐつぐNeutralTo set bones, graft trees (「接ぎ木」), or splice cloth and wood. 「接合」 is the more technical term.
• Related一緒になるいっしょになるCasualColloquial: to become one, also to get married. Mostly for people or groups; 「接合」 is for parts and objects.
• Related結び合わすむすびあわすWrittenWritten style, same meaning as 「結び合わせる」: tying together or correlating. Not often used.
• Antonym分離ぶんりNeutralSeparation, as in 「油と水が分離する」. The opposite of 「接合」 in the sense of combining versus separating.
• Antonym切断せつだんNeutralCutting or severing, as in 「回線を切断」. The opposite of joining two parts together.
• Antonym分断ぶんだんWrittenWritten style: dividing into parts, also splitting societies or nations. The opposite of the linking that 「接合」 describes.

For everyday joining, use 「繋ぐ」. 「接合」 is the technical word for metal, bones or parts joined firmly at their joint, as in 「接合部」. Use 「結合」 for chemical bonds or elements uniting, 「連結」 for linking train cars one by one, 「接続」 for network connections. For piecing fragments together say 「継ぎ合わせる」 or 「つなぎ合わせる」; for abstract links 「結びつける」. 「合流」 is for rivers or groups merging, 「接ぐ」 for bones and grafts. Antonyms: 「分離」, 「切断」, 「分断」.

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

1. 繋つなぐこと。
2. 原生げんせい生物せいぶつの有性ゆうせい生殖せいしょくの方法ほうほう。
3. 植物しょくぶつや菌類きんるいで、生殖せいしょく細胞さいぼう、または生殖せいしょく器官きかんが合体がったいすること。