The Deinococcus is the one genus of three of the Deinococcales group from the Deinococcus-Thermus

Deinococcus-Thermus

The Deinococcus-Thermus are a small group of bacteria composed of cocci highly resistant to environmental hazards.There are two main groups.* The Deinococcales include two families, with three genera, Deinococcus and Truepera, the former with several species that are resistant to radiation; they...

 phylum highly resistant to environmental hazards.

There are 47 species of Deinococcus described according to NCBI on 25 august 2011 :

• Deinococcus aerius
• Deinococcus aerolatus
• Deinococcus aerophilus
• Deinococcus aetherius
• Deinococcus alpinitundrae
• Deinococcus altitudinis
• Deinococcus apachensis
• Deinococcus aquaticus
• Deinococcus aquatilis
• Deinococcus aquiradiocola
• Deinococcus caeni
• Deinococcus cellulosilyticus
• Deinococcus claudionis
• Deinococcus daejeonensis
• Deinococcus depolymerans
• Deinococcus deserti
• Deinococcus ficus
• Deinococcus frigens
• Deinococcus geothermalis
• Deinococcus gobiensis
• Deinococcus grandis (originally Deinobacter grandis, but then transferred )
• Deinococcus hohokamensis
• Deinococcus hopiensis
• Deinococcus indicus
• Deinococcus maricopensis
• Deinococcus marmoris
• Deinococcus misasensis
• Deinococcus murrayi
• Deinococcus navajonensis
• Deinococcus papagonensis
• Deinococcus peraridilitoris
• Deinococcus pimensis
• Deinococcus piscis
• Deinococcus proteolyticus
• Deinococcus radiodurans
  Deinococcus radiodurans
  Deinococcus radiodurans is an extremophilic bacterium, one of the most radioresistant organisms known. It can survive cold, dehydration, vacuum, and acid, and is therefore known as a polyextremophile and has been listed as the world's toughest bacterium in The Guinness Book Of World Records.-Name...
  
  
• Deinococcus radiomollis
• Deinococcus radiophilus
• Deinococcus radiopugnans
• Deinococcus reticulitermitis
• Deinococcus roseus
• Deinococcus saxicola
• Deinococcus sonorensis
• Deinococcus wulumuqiensis
• Deinococcus xibeiensis
• Deinococcus xinjiangensis
• Deinococcus yavapaiensis
• Deinococcus yunweiensis

These bacteria have thick cell walls that give them gram-positive

Gram-positive

Gram-positive bacteria are those that are stained dark blue or violet by Gram staining. This is in contrast to Gram-negative bacteria, which cannot retain the crystal violet stain, instead taking up the counterstain and appearing red or pink...

 stains, but they include a second membrane and so are closer in structure to those of gram-negative

Gram-negative

Gram-negative bacteria are bacteria that do not retain crystal violet dye in the Gram staining protocol. In a Gram stain test, a counterstain is added after the crystal violet, coloring all Gram-negative bacteria with a red or pink color...

 bacteria. They are also characterised by the presence of the carotenoid pigment Deinoxanthin that give them their pink color, and a high resistance to gamma and UV radiation and are usually isolated according to these two criteria.

The etymology is:

Greek adjective deinos (δεινός), dreadful, strange; Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 neuter gender

Grammatical gender

Grammatical gender is defined linguistically as a system of classes of nouns which trigger specific types of inflections in associated words, such as adjectives, verbs and others. For a system of noun classes to be a gender system, every noun must belong to one of the classes and there should be...

 noun bacterium, rod, New Latin

New Latin

The term New Latin, or Neo-Latin, is used to describe the Latin language used in original works created between c. 1500 and c. 1900. Among other uses, Latin during this period was employed in scholarly and scientific publications...

 neuter gender

Grammatical gender

Grammatical gender is defined linguistically as a system of classes of nouns which trigger specific types of inflections in associated words, such as adjectives, verbs and others. For a system of noun classes to be a gender system, every noun must belong to one of the classes and there should be...

noun Deinobacterium, an unusual bacterium.