CMU English Pronouncing Dictionary Dictionary [with local updates] CMU Pronouncing Dictionary
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
n. [ Metal + ammonium. ] (Chem.) A hypothetical radical derived from ammonium by the substitution of metallic atoms in place of hydrogen. [ 1913 Webster ]
เพิ่มคำศัพท์
ทราบความหมายของคำศัพท์นี้? กด [เพิ่มคำศัพท์] เพื่อใส่คำนี้พร้อมความหมาย เพื่อเป็นวิทยาทานแก่ผู้ใช้ท่านอื่น ๆ
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