lunation

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the period between successive new moons (29.531 days) (Freq. 2)
• Syn:
lunar month, moon, synodic month
• Hypernyms:
month
• Part Holonyms:
lunar year

• Từ đồng nghĩa / Synonyms:
  lunar month, moon, synodic month