Archaea Definition

ärkēə

noun

Any of a domain of primitive microorganisms lacking internal membranes and, often, living in anaerobic, extremely hot, salty, or acidic environments.

Webster's New World

Plural form of archaeon.

Wiktionary

pronoun

A taxonomic domain of single-celled organisms lacking nuclei, formerly called archaebacteria but now known to differ fundamentally from bacteria.

Wiktionary

Origin of Archaea

From Ancient Greek ἀρχαῖα (arkhaia, “ancient”), neuter plural of ἀρχαῖος (arkhaios, “ancient”).

From Wiktionary

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