homeobox
noun
ho·meo·box ˈhō-mē-ə-ˌbäks 
: a short usually highly conserved DNA sequence in various eukaryotic genes and especially homeotic genes that encodes a DNA-binding amino acid domain of some proteins
Word History
First Known Use
1984, in the meaning defined above
Medical Definition
homeobox
noun
ho·meo·box ˈhō-mē-ō-ˌbäks
: a short usually highly conserved DNA sequence in various genes and especially homeotic genes that encodes a homeodomain