0 in a way that involves three groups or countries: --
Some work has been done trilaterally on automobile emissions standards.
Ministries in the three countries work trilaterally on transportation, energy, and food safety.
1 in a way that has three sides: --
trilaterally symmetrical forms
They are tall, slender and trilaterally symmetric.
In this context, we have started cooperating trilaterally with developed countries as well.
We have asked why we do not sit down together trilaterally and try to find a solution.
I hope that this matter will be pursued trilaterally in the subcontinent.
It is trilaterally symmetrical in three-dimensional terms.
Sometimes details had to be negotiated trilaterally, with hospital operators as well as the patient and therapists.
Both countries will have to consider carefully how to deal bilaterally or trilaterally with the new tariffs.
Progress is most likely to be made bilaterally rather than trilaterally.