trilateral

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++tri·lat·e·ral /traɪˈlætərəl/ adjective [only before noun]  involving three groups, countries etc 涉及三方的，涉及三个国家的 → bilateral trilateral peace talks 三边和平谈判

Examples from the Corpus

trilateral• a trilateral agreement• A trilateral summit meeting was planned for the following month.

tri·lat·e·ral adjectiveChineseSyllable  

three groups, countries involving Corpus etc

trilateral
tri‧lat‧e‧ral /traɪˈlætərəl/ adjective [only before noun]
involving three groups, countries etc ⇨ bilateral:
    trilateral peace talks

tri·lat·eralBrE /ˌtraɪˈlætərəl/ 🔊NAmE /ˌtraɪˈlætərəl/ 🔊 adjectiveinvolving three groups of people or three countries 三边的；三方的◆trilateral talks三方会谈  ➡  compare bilateral (1) , multilateral, unilateral