合ごう同どう

noun, noun or participle which takes 'suru', transitive verb, intransitive verb

combination; joining; merger

Refers to the act or process of two or more groups, bodies, classes, etc. joining or being combined. As 合同する it can be intransitive or transitive, though more specific words such as 合併 or 統合 may be preferred for legal or organizational mergers.

• 二ふたつのクラスを合ごう同どうして授じゅ業ぎょうを行おこなった。

  We combined the two classes and held the lesson.

• 小ちいさな劇げき団だんが合ごう同どうして、一ひとつの公こう演えんを開ひらいた。

  The small theater groups joined together and put on one performance.

noun which may take the genitive case particle 'no'

joint; combined; shared

Attributive use, often in compounds such as 合同会議, 合同チーム, and 合同説明会, meaning that multiple parties are taking part together.

• 三さん社しゃ合ごう同どうの説せつ明めい会かいに参さん加かした。

  I attended a joint information session held by three companies.

• 合ごう同どうチームが大たい会かいで優ゆう勝しょうした。

  The combined team won the tournament.

noun, noun which may take the genitive case particle 'no'

congruence; congruent

Mathematical term for figures that are the same shape and size. Common in geometry, especially with triangles and other figures.

• この二ふたつの三さん角かく形けいは合ごう同どうである。

  These two triangles are congruent.