r

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the 18th letter of the Roman alphabet
• Syn:
R
• Hypernyms:
letter, letter of the alphabet, alphabetic character
• Member Holonyms:
Roman alphabet, Latin alphabet
2. the length of a line segment between the center and circumference of a circle or sphere
• Syn:
radius
• Hypernyms:
length
• Hyponyms:
semidiameter, radius of curvature
• Part Holonyms:
diameter, diam

• Từ đồng nghĩa / Synonyms:
  radius, R, gas constant, universal gas constant, roentgen