Archaea

Etymology
From, neuter plural of.

Proper noun

 * 1) Single-celled organisms lacking nuclei, formerly called archaebacteria, but now known to differ fundamentally from bacteria.
 * 2) A taxonomic domain.

Synonyms

 * ,, Crenarchaeota,

Hyponyms

 * Crenarchaeota,, , , Thaumarchaeota - phyla
 * Crenarchaeota,  - phyla

Derived terms

 * archaeal
 * archaean
 * archaeon