ni.gres.cence

n.（名詞）
The process of becoming black or dark.
變黑：變黑或變暗的過程
Blackness or darkness, as of complexion.
膚色的黝黑

來源：
From nigrescent [blackish]
源自 nigrescent [黑的]
from Latin nigrôscôns nigrôscent- [present participle of] nigrôscere [to become black]
源自 拉丁語 nigrôscôns nigrôscent- [] nigrôscere的現(xiàn)在分詞 [變黑]
from niger nigr- [black]
源自 niger nigr- [黑]

【引伸】
nigres.cent
adj.（形容詞）