dn -abbr

  1. down

DNA [,dē-,en-'ā] -n

  1. any of various nucleic acids that are usu. the molecular basis of heredity, are constructed of a double helix held together by hydrogen bonds between purine and pyrimidine bases which project inward from two chains containing alternate links of deoxyribose and phosphate, and that in eukaryotes are localized chiefly in cell nuclei

DNA fingerprinting -n

  1. a technique used esp. for identification (as for forensic purposes) by extracting and identifying the base-pair pattern in an individual's DNA called also DNA typing

DNA polymerase -n

  1. any of several polymerases that promote replication or repair of DNA usu. using single-stranded DNA as a template

DN·ase [(,)dē-'en-,ās, -,āz] -n

  1. an enzyme that hydrolyzes DNA to nucleotides called also deoxyribonuclease

DNA virus -n

  1. a virus whose genome consists of DNA

DNB -abbr

  1. Dictionary of National Biography

DNF -abbr

  1. did not finish

DNP -abbr

  1. did not play

DNR -abbr

  1. do not resuscitate