extant

形容词 extant:

1. still in existence; not extinct or destroyed or lost- Edward Clodd

1. This law is ancient but still extant.
   这一法律古老但仍然有效。
2. The earliest extant manuscript of this poem has been kept in the museum.
   此诗现存最早的原稿收藏在这座博物馆里。

ex.tant

adj.（形容词）
Still in existence; not destroyed, lost, or extinct:
现有的，未遗失的，未毁的：尚存的；未遭毁灭的，未失去的或未灭绝的：
例句：
extant manuscripts.
尚存的手稿

Archaic Standing out; projecting.
【古语】 显著的：明显的；显而易见的

来源：
Latin exst3ns exstant- [present participle of] exst3re [to stand out]
拉丁语 exst3ns exstant- [] exst3re的现在分词 [显著的]
ex- [ex-]
ex- [前缀，表.…之外.]
st3re [to stand] * see st3-
st3re [站立] *参见 st3-