@rolenthedeep @web3isgreat It's a concept in Ethereum and Ethereum-like smart contract chains. Because the smart contract language is Turing-complete, you can ask every node to do an unlimited amount of computation.

The gas mechanism is how Ethereum users are charged for computation al work. You pay per operation, and you fund your transaction with gas. Each operation the Ethereum Virtual Machine does depletes the gas by a certain amount, and if there's not enough gas to complete your transaction, it fails.

Not here to say whether this is a good or bad thing, just explaining what's meant by "gas" here.