名称

Longhornの正式名称 Windows Vista だそうな。
http://www.microsoft.com/windowsvista/default.mspx

エンカルタより引用
http://encarta.msn.com/dictionary_1861734355/vista.html
「vista
1. scenic view: a scenic or panoramic view

2. view seen through narrow opening: a view seen through a long narrow opening, e.g. between rows of trees or buildings

3. mental picture: a mental picture covering a wide range of objects or a long succession of events in the past or future
open up vistas of expansion into hitherto untapped markets

[Mid-17th century. < Italian, "view" < past participle of vedere "see" < Latin videre]」

exiteによる訳
3. 想像上の絵: 過去か未来に広範囲の物か出来事の長い継承をカバーする想像上の絵

(-_-;)