Line

Line or lines may refer to:

Science and technology

Line (electrical engineering), a circuit or loop.
- A power line for electric power transmission
- line power or lines power, domestic mains electricity.
- telephone line
- RF transmission line
- Line level, a common standard for audio signals.
Line (video), a measure of video display resolution or image resolution
line, former name of the unit of magnetic flux, the Maxwell
Line (unit), an obsolete unit of length equal to one-twelfth or one-tenth of an inch.
Line (geometry), an infinitely-extending one-dimensional figure that has no curvature.
line: a medical catheter, particularly one used for intravenous treatment.
Line (text file), a row of characters as a unit of organization within text files.
A "line of longitude" or "line of latitude" in geography. "The Line" may refer to the equator.
Relationships in genetics and genealogy, such as Lineage and kinship and descent.

Railway line
Shipping line, a company engaged in sea transport.
The International Load Line or Plimsoll line (Waterline), indicates the maximum safe draft for the vessel
Airline
A bus line, see List of bus operating companies

Line (formation), a standard tactical formation of forces.
- Line infantry, a line formation of infantrymen who were part of the "Line Regiments".
Line of battle, in naval warfare, a line of warships, hence "Ship of the line".

Line (play), a 1967 long-running play written by Israel Horovitz.
Lines (Emily Brontë poem), written in December 1837.
Lines Review, a Scottish literary periodical published between 1952 and 1998.
"Lines", abbreviation for "Lines Composed a Few Miles above Tintern Abbey, on Revisiting the Banks of the Wye during a Tour. July 13, 1798", a poem by William Wordsworth
A line of text in writing or typography.
Line (poetry), the fundamental unit of poetic composition.
The dialogue to be spoken in a script or screenplay.

LINE (combat system), a martial arts system
Long interspersed nuclear element (LINE), a type of retrotransposon in genomics.

Line (given name), a Danish and Norwegian female given name
A length of rope, cable, or chain when put to use (such as a clothesline, anchor line)
A line or queue of people waiting in a queue area
A thin continuous length of ink or other marking in a drawing
A geographical or political border that is clearly defined and demarcated
Lines (punishment), punishment by forced writing of text
Party line (politics), an idiom for a political party or social movement's canon agenda
Lines of cocaine
Lines (video game)
A one-, two- or three-line whip, a notice issued by a Chief Whip in the UK parliament
A "straight line" is used to set up a joke, while the punch line completes it
Line Islands, an island group in the central Pacific
Line, a drug in the video game Togainu no Chi