When miners solved for hash, there is a time period in finding a solution to each block hash. The time period is referred to as Block Time. Block time is the time taken for miners to generate another block on the network. Block time is usually measured as an avarage value but with no precise time.
Every cryptocurrency has its own average block time. For example the average block time for bitcoin network is ten minutes, it's higher for some other cryptocurrency networks and likewise higher for some others.