Dictionary.com
Thesaurus.com
Showing results for "archaeon"

archaeon

American  
[ahr-kee-ahn, ahr-kay-ahn] / ɑrˈki ɑn, ɑrˈkeɪ ɑn /

noun

  • archaeons
    plural
  1. any member of the domain Archaea, single-celled microorganisms similar to bacteria but having distinct structural and genetic characteristics.


archaeon Scientific  
/ ärkē-ŏn′ /
  • archaea
    plural
  1. Any of a group of microorganisms that resemble bacteria but are different from them in their genetic makeup and certain aspects of their cell structure, such as the composition of their cell walls. Archaea usually live in extreme, often very hot or salty environments, such as hot mineral springs or deep-sea hydrothermal vents, but some are also found in animal digestive systems. The archaea are considered a separate domain in some classifications, but a division of the prokaryotes (Monera) in others. Some scientists believe that archaea were the earliest forms of cellular life.

  2. Also called archaebacterium


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The newly identified archaeon has been named Nerearchaeum marumarumayae.

From Science Daily Sep. 3, 2026

In every place, copies of the Borg co-occurred with DNA linked to a methane-oxidizing archaeon called Methanoperedens.

From Science Magazine Jul. 15, 2021

He is part of a team that spent a decade trying to determine the physical shape of a particular protein in a tiny bacteria-like organism called an archaeon.

From New York Times Nov. 30, 2020

In the end, they found 17 enzymes from 9 different organisms, including E. coli, an archaeon, the plant Arabidopsis and humans.

From Nature Nov. 6, 2018

Mitochondrial merger Eukaryotes have a number of innovations compared to their more primitive archaeon ancestors.

From Scientific American Nov. 30, 2015

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training