Real Dictionary

long distance and size
A long distance is a great distance. A long journey or route covers a great distance.
adjective: Something that is long measures a great distance from one end to the other.

Long in American English
ˈHuey (Pierce) (ˈhjui ) 1893-1935; U.S. political leader: assassinated

long in American English 1
measuring much from end to end in space or from beginning to end in time; not short or brief
adjective: having considerable linear extent in space
noun: a comparatively long time

long in American English 2
to feel a strong yearning; wish earnestly
intransitive verb: to have an earnest or strong desire or craving; yearn

long in American English 3
to be fitting or appropriate
intransitive verb: to be suitable or fitting

long in American English 4
longitude

Long in British English
noun: Crawford Williamson. 1815–78, US surgeon. He was the first to use ether as an anaesthetic

long in British English 1
adjective: having relatively great extent in space on a horizontal plane

long in British English 2
verb: to have a strong desire

long in British English 3
verb: to belong, appertain, or be appropriate

long in British English 4
abbreviation for: longitude

long time
Long means a great amount of time or for a great amount of time.

long verb uses
verb: If you long for something, you want it very much.

long- in British English
adverb: for or lasting a long time

long. in American English
abbreviation: longitude

longitude in British English 4
noun: distance in degrees east or west of the prime meridian at 0° measured by the angle between the plane of the prime meridian and that of the meridian through the point in question, or by the corresponding time difference