Of or relating to lines of longitude.

Roget 200: long, longsome^†; lengthy, wiredrawn^†, outstretched; lengthened etc. v.; sesquipedalian etc. (words) 577; interminable, no end of; macrocolous^†.    linear, lineal; longitudinal, oblong.    as long as my arm, as long as today and tomorrow; unshortened etc. (shorten) etc. 201^†.    ... show more

Running lengthwise.

Over an extended time.