–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 on-line bookstore.

4.	available or operating on a computer or computer network: an on-line dictionary.

5.	by means of or using a computer: on-line shopping.

6.	Radio. (of a network) supplying affiliated stations with all or a substantial part of their programming.

7. 3e8

Television. of or pertaining to the final editing of a videotaped program.

8.	done or accomplished while in operation or active service: on-line maintenance.

9.	located on major routes or rail lines: on-line industries.

–adverb

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

O.E. stocc "stump, post, stake, tree trunk, log," also "pillory" (usually plural, stocks), from P.Gmc. *stukkaz "tree trunk" (cf. O.N. stokkr "block of wood, trunk of a tree," O.S., O.Fris. stok, M.Du. stoc "tree trunk, stump," Du. stok "stick, cane," O.H.G. stoc "tree trunk, stick," Ger. Stock "stick, cane;" also Du. stuk, Ger. Stück< 4ef /span> "piece"), from PIE *(s)teu- (see steep (adj.)). Meaning "ancestry, family" (1382) is a fig. use of the "tree trunk" sense (cf. family tree). This is also the root of the meaning "heavy part of a tool," and "part of a rifle held against the shoulder" (1541). Stock, lock, and barrel "the whole of a thing" is recorded from 1817. Meaning "framework on which a boat was constructed" (1422) led to fig. phrase on stocks "planned and commenced" (1669). Stock-still (c.1470) is lit. "as still as a tree trunk."