This is the 8628th most frequent Russian word.
основанием
"Основанием" means "basis" or "foundation" in English.
The term 'основанием' is used in the phrase 'на основании', meaning 'based on'. This usage denotes a foundation or rationale for the action or decision described in the sentence.
Решение было принято на основании новых данных.
The decision was made based on new data.
Here, the word 'основанием' is used to signify the physical foundation, specifically the structural support for the building mentioned.
Основанием здания служат прочные бетонные блоки.
The foundation of the building is made of sturdy concrete blocks.
In this sentence, 'основанием' indicates the basis or starting point for subsequent developments or further studies in the mentioned subject area.