kilobases

/K IH1 L OW0 B EY1 S AH0 Z/
noun
  1. 1

    A length of double-stranded DNA containing two thousand nucleotides, one thousand on each strand

  2. 2

    A length of single-stranded RNA containing one thousand nucleotides

Source: https://en.wiktionary.org/wiki/kilobase, https://en.wiktionary.org/wiki/kilobases