This is the 18372nd most frequent Russian word.
экспедиционные
The Russian word "экспедиционные" translates to "expeditionary" in English, relating to an expedition or journey.
The word 'expedition' in this context refers to organized teams preparing for a specific exploratory or field mission.
Экспедиционные группы собираются перед отъездом.
Expedition groups are gathering before departure.
Here, 'expeditionary' refers to supplies or items prepared for use in expeditions.
У него есть множество экспедиционных материалов.
He has many expeditionary materials.
In this context, 'expeditionary' describes the nature of research conducted during expeditions.