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Jyutping gaa1 maa5
Pinyin jiā mǎ

Definitions (Wiktionary)
  1. noun
    gamma (the third letter of the modern Greek alphabet)

[-]

Jyutping gaa1 maa5
Pinyin gā mǎ

Definitions (CC-CEDICT)
  1. gamma (Greek letter Γγ) (loanword)
Definitions (Wiktionary)
  1. noun
    gamma (the third letter of the modern Greek alphabet)