Webster's English Dictionary

Enter the word to look up:

longitude

lon.gi.tude \'la:n-j*-.t(y)u:d\ n [ME, fr. L longitudin-, longitudo, fr. 
   longus] 1a: LENGTH  archaic  1b: long duration  2a: angular distance 
   measured on a great circle of reference from the inter section of the 
   adopted zero meridian with this reference circle to the similar 
   intersection of the meridian passing through the object 2b: the arc or 
   portion of the earth's equator intersected between the merid ian of a given 
   place and the prime meridian (as from Greenwich, England) and expressed 
   either in degrees or in time