形容詞 longitudinal:

1. of or relating to lines of longitude
2. running lengthwise
3. over an extended time

1. A longitudinal cut from the trunk of a tree.
   料板，板皮從樹(shù)干上縱切下的一塊木材
2. A longitudinal study of twins.
   對(duì)雙胞胎的跟蹤研究

lon.gi.tu.di.nal

adj.（形容詞）

Of or relating to longitude or length:
經(jīng)度的：經(jīng)線或長(zhǎng)度的或與之相關(guān)的：
例句：
a longitudinal reckoning by the navigator; made longitudinal measurements of the hull.
領(lǐng)航員進(jìn)行經(jīng)度計(jì)算；計(jì)算船身長(zhǎng)度

Concerned with the development of persons or groups over time:
與人或團(tuán)體經(jīng)過(guò)一段時(shí)間的發(fā)展有關(guān)的：
例句：
a longitudinal study of twins.
對(duì)雙胞胎的跟蹤研究

Placed or running lengthwise:
縱向放置的或縱行的：
例句：
longitudinal stripes.
縱向的條紋

【引伸】
lon.gitu.dinally
adv.（副詞）