online

adjective

1. operating under the direct control of, or connected to, a main computer.
2. connected by computer to one or more other computers or networks, as through a commercial electronic information service or the Internet.
3. of or denoting a business that transmits electronic information over telecommunications lines: an online bookstore.
4. available or operating on a computer or computer network: an online dictionary.
5. by means of or using a computer: online shopping.
6. Radio. (of a network) supplying affiliated stations with all or a substantial part of their programming.
7. Television. of or relating to the final editing of a videotaped program.
8. done or accomplished while in operation or active service: online maintenance.
9. located on major routes or rail lines: online industries.

adverb

10. with or through a computer, especially over a network.

adjective

1. of, relating to, or concerned with a peripheral device that is directly connected to and controlled by the central processing unit of a computer
2. of or relating to the internetonline shopping
3. occurring as part of, or involving, a continuous sequence of operations, such as a production line

adverb

4. while connected to a computer or the internet

adj.in reference to computers, “directly connected to a peripheral device,” 1950 (originally as on-line).

1. Connected to or accessible by means of a computer or computer network.

A term referring to locations on or use of the Internet. The term can be used to refer to a specific location or Web page (“Our sales catalogues can be found online at — ”) or to a personal activity (“I went online to find the information you wanted.”)