English-Thai: HOPE Dictionary [with local updates]Hope Dictionary
n. หน่วยวัดอำนาจหักเหแสงของเลนส์ใช้อักษรย่อว่า D
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
‖n. [ F. See 2d Dioptric. ] (Optics) A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter. [ 1913 Webster ]
เพิ่มคำศัพท์
ทราบความหมายของคำศัพท์นี้? กด เพื่อใส่คำนี้พร้อมความหมาย เพื่อเป็นวิทยาทานแก่ผู้ใช้ท่านอื่น ๆ
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