BR

Pronunciation (US):

(GB):

 Dictionary entry overview: What does BR mean? 

• BR (noun)
  The noun BR has 2 senses:

1. a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water

2. a Marxist-Leninist terrorist organization that arose out of a student protest movement in the late 1960s; wants to separate Italy from NATO and advocates violence in the service of class warfare and revolution; mostly inactive since 1989

  Familiarity information: BR used as a noun is rare.

 Dictionary entry details 

• BR (noun)

Sense 1

Meaning:

A nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water

Classified under:

Nouns denoting substances

Synonyms:

atomic number 35; Br; bromine

Hypernyms ("Br" is a kind of...):

chemical element; element (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)

halogen (any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions)

Holonyms ("Br" is a substance of...):

brine; saltwater; seawater (water containing salts)

Sense 2

Meaning:

A Marxist-Leninist terrorist organization that arose out of a student protest movement in the late 1960s; wants to separate Italy from NATO and advocates violence in the service of class warfare and revolution; mostly inactive since 1989

Classified under:

Nouns denoting groupings of people or objects

Synonyms:

BR; Brigate Rosse; Red Brigades

Instance hypernyms:

foreign terrorist organization; FTO; terrorist group; terrorist organization (a political movement that uses terror as a weapon to achieve its goals)

Domain category:

act of terrorism; terrorism; terrorist act (the calculated use of violence (or the threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimidation or coercion or instilling fear)

Domain region:

Italia; Italian Republic; Italy (a republic in southern Europe on the Italian Peninsula; was the core of the Roman Republic and the Roman Empire between the 4th century BC and the 5th century AD)

 Context examples 

The ICR BR strain is a general purpose model that is employed in safety and efficacy testing, aging studies, pseudo pregnancy, and as a surgical model.

(ICR BR Mouse, NCI Thesaurus)

A synthetic immunotoxin consisting of the murine monoclonal antibody N901 conjugated with toxin-blocked ricin (BR).

(Monoclonal Antibody N901-bR, NCI Thesaurus)

Monoclonal antibody N901-BR binds to CD56, a neural cell adhesion molecule (NCAM) that is expressed by tumor cells of neuroectodermal origin (including small cell lung cancer (SCLC) and neuroblastoma), and by normal cells (including neuroendocrine cells, cardiac muscle cells, and cells in peripheral nerve tissue).

(Monoclonal Antibody N901-bR, NCI Thesaurus)