archean, archaean
(adjective) of or relating to the earliest known rocks formed during the Precambrian Eon
Source: WordNet® 3.1
archaean (plural archaeans)
(biology) Any organism of the domain Archaea.
Archaean (not comparable)
(geology) Of, or relating to the geologic eon from about 3,800 to 2,500 million years ago; comprises the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras; marked by an atmosphere with little oxygen, the formation of the first continents and oceans and the emergence of simple life.
Archaean
(geology) The eon from 2,500 Ma to 4,000 Ma.
• (eon 2,500–4,000 Ma): Precambrian
• (eon 2,500–4,000 Ma): Eoarchaean, Paleoarchaean, Mesoarchaean, Neoarchaean
• (eon 2,500–4,000 Ma): Hadean, Proterozoic - eons in Precambrian
Source: Wiktionary
Ar*chæ"an, a. Etym: [Gr.
Definition: Ancient; pertaining to the earliest period in geological history.
Ar*chæ"an, n. (Geol.)
Definition: The earliest period in geological period, extending up to the Lower Silurian. It includes an Azoic age, previous to the appearance of life, and an Eozoic age, including the earliest forms of life.
Note: This is equivalent to the formerly accepted term Azoic, and to the Eozoic of Dawson.
Source: Webster’s Unabridged Dictionary 1913 Edition
13 May 2025
(adjective) in a state of mental numbness especially as resulting from shock; “he had a dazed expression on his face”; “lay semiconscious, stunned (or stupefied) by the blow”; “was stupid from fatigue”
Contrary to popular belief, coffee beans are not technically beans. They are referred to as such because of their resemblance to legumes. A coffee bean is a seed of the Coffea plant and the source for coffee. It is the pit inside the red or purple fruit, often referred to as a cherry. Just like ordinary cherries, the coffee fruit is also a so-called stone fruit.
