名詞 dna:

1. (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
   同義詞：deoxyribonucleic acid, desoxyribonucleic acid

DNA

n.（名詞）
A nucleic acid that carries the genetic information in the cell and is capable of self-replication and synthesis of RNA. DNA consists of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. The sequence of nucleotides determines individual hereditary characteristics.
脫氧核糖核酸：一種在細胞中帶有基因信息的核酸，能夠自行復制并合成核糖核酸，DNA由兩個核甙酸長鏈組成，這兩個核甙酸鏈交結(jié)成一個雙螺旋體

來源：
d(eoxyribo)n(ucleic) a(cid)
d(eoxyribo)n(ucleic) a(cid)