Portmanteau of developer + operations, where infrastructure and application life cycle are coded using engineering best practices in a way that is repeatable and debuggable. Someone in devops will know tools such as Chef, Puppet, Virtualization, Containerization, Load Balancers, Network and Application Firewalls, IAM. Basically all the stuff that supports running an application. Application and System level cross cutting concerns.

Dont pretend you couldn't give the same answer, imposter.

pretty much, its the new "Agile"... and people use the term often have no idea what it means. to me 'devops' a focus on automated deployment (in prod as in dev) and integrating prod. operations teams more closely with the development silo