simple past tense and past participle of rank
"The teams were ranked according to their final scores in the tournament."
In plain English: To rank something means to give it a specific position based on how good or important you think it is compared to others.
"The company ranked him second in sales for last year."
arranged in a sequence of grades or ranks
"stratified areas of the distribution"
The word ranked is formed by adding the past tense suffix to the verb rank. It entered English as a standard way to describe something that has been placed in an order or position.