What is the meaning of http or https in Internet?

HTTP – “Hyper Text Transfer Protocol

HTTPS – “Hyper Text Transfer Protocol Secure

The Hyper Text Transfer Protocol or HTTP is an application protocol for distributed, collaborative hypermedia information systems developed by Tim Berners-Lee, a computer engineer and scientist at CERN in 1989.

The HTTP is an unsecured connected protocol where is HTTPS is an encrypted secured Protocol.

HTTPS also referred as HTTPS over TLS or HTTP over SSL.

Source: Wikipedia, Wikipedia