This is the 16504th most frequent Russian word.
санатории
"Sanatoriums" or "health resorts" where people go for medical treatment, rest, and recovery.
The word 'санатории' is used in plural form here to indicate location of the health resort.
Летом я отдыхал в санатории у моря.
In the summer, I vacationed at a seaside sanatorium.
The word 'санатории' is used in plural form as the subject to denote institutions offering health recovery services.
Санатории часто предоставляют программы для оздоровления и отдыха.
Sanatoriums often provide programs for health improvement and relaxation.
The word 'санатории' is used in plural form within the context of possible destinations for planned visits.