[lon-ji-tood, -tyood] 
| 1. | Geography. angular distance east or west on the earth's surface, measured by the angle contained between the meridian of a particular place and some prime meridian, as that of Greenwich, England, and expressed either in degrees or by some corresponding difference in time. |
| 2. | Astronomy.
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| lon·gi·tude (lŏn'jĭ-tōōd', -tyōōd', lôn'-) n.
[Middle English, length, a measured length, from Old French, from Latin longitūdō, longitūdin-, from longus, long; see del-1 in Indo-European roots.] |
A measurement, in degrees, of a place's distance east or west of the prime meridian, which runs through Greenwich, England. (Compare latitude.)
dʒɪˌtud
