b

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. (physics) a unit of nuclear cross section;
the effective circular area that one particle presents to another as a target for an encounter
• Syn:
barn
• Topics:
nuclear physics, atomic physics, nucleonics
• Hypernyms:
area unit, square measure
2. the 2nd letter of the Roman alphabet
• Syn:
B
• Hypernyms:
letter, letter of the alphabet, alphabetic character
• Member Holonyms:
Roman alphabet, Latin alphabet

• Từ đồng nghĩa / Synonyms:
  B, type B, group B, barn, Bel, boron, atomic number 5, B-complex vitamin, B complex, vitamin B complex, vitamin B, B vitamin, bacillus