cretaceous

名词 cretaceous:

1. from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
   同义词：Cretaceous period

形容词 cretaceous:

1. abounding in chalk
2. of or relating to or denoting the third period of the Mesozoic era

Cre.ta.ceous

adj.（形容词）
Of, belonging to, or designating the geologic time, system of rocks, and sedimentary deposits of the third and last period of the Mesozoic Era, characterized by the development of flowering plants and the disappearance of dinosaurs.See table at geologic time
白垩纪的：属于或表明地质时期岩石体系以及中生代的第三和最后一个纪的沉积物的，此纪以有花植物的进化和恐龙的灭绝为特征参见 geologic time
cretaceous Of, containing, or resembling chalk.
cretaceous 白垩的：白垩的、含白垩的或似白垩的
n.（名词）
The Cretaceous Period.
白垩纪

来源：
From Latin crôt3ceus [chalky]
源自 拉丁语 crôt3ceus [白垩的]
from crôta [chalk]
源自 crôta [白垩]
from Crôta (terra) [Cretan (earth)]
源自 白垩（土） [白垩的（土）]

【引伸】
creta.ceously
adv.（副词）