This is the 11257th most frequent Russian word.
двусторонней
"Two-sided" or "bilateral."
The word 'двусторонняя' is used as an adjective to describe the nature of the meeting, indicating it involves two sides or parties.
У нас была двусторонняя встреча с партнёрами.
We had a bilateral meeting with the partners.
The word 'двусторонним' is used as an adjective in instrumental case, describing an agreement involving two participants.
Договор был двусторонним, поэтому обе стороны должны его выполнять.
The agreement was bilateral, hence both parties must adhere to it.
The word 'двусторонние' is used as a plural adjective to describe ongoing aspects involving two entities.