a route through which anything passes or progresses: channels of trade.
7.
channels, the specific, prescribed, or official course or means of communication: In an emergency he was able to reach the governor without going through channels.
8.
a groove or furrow.
9.
a means of access: He considers the Senate a channel to the White House.
10.
Architecture.
a.
a flute in a column, especially one having no fillet between it and other flutes.
b.
any of the prominent vertical grooves in a triglyph.
11.
(in jazz or popular music) a bridge.
12.
a frequency band of sufficient width for one- or two-way communication from or to a transmitter used for television, radio, CB radio, telephone, or telegraph communication.
13.
Computers. a path for the transfer of signals or data within a computer or between a computer and its peripheral equipment.
14.
Digital Technology.
a.
feed(def. 23): Learn how to create your own Web channel.
b.
a Web page or Web site that distributes frequently updated content by means of a feed: Subscribe to my YouTube channel.
15.
either of the two signals in stereophonic or any single signal in multichannel sound recording and reproduction.
16.
Cell Biology. a transient opening made by a protein embedded in a cell membrane, permitting passage of specific ions or molecules into or out of the cell: calcium channel.
17.
a tubular passage for liquids or fluids.
18.
Building Trades.
a.
any structural member, as one of reinforced concrete, having the form of three sides of a rectangle.
b.
a number of such members: channel in 100-foot lengths.
c.1300, "bed of running water," from O.Fr. chanel, from L. canalis "groove, channel, waterpipe" (see canal) Given a broader, figurative sense and a verbal meaning 1590s. Meaning "circuit for telegraph communication" (1848) probably led to that of "band of frequency for radio or TV signals" (1928).
A specified frequency band for the transmission and reception of electromagnetic signals, as for television signals.
The part of a field effect transistor, usually U-shaped, through which current flows from the source to the drain. See more at field effect transistor.
A pathway through a protein molecule in a cell membrane that modulates the electrical potential across the membrane by controlling the passage of small inorganic ions into and out of the cell.
The bed or deepest part of a river or harbor.
A large strait, especially one that connects two seas.