homeobox
Concise Oxford English Dictionary © 2008 Oxford University Press:
homeobox /ˌhɒmɪə(ʊ)ˈbɒks, ˌhəʊm-/ (also homoeobox)
▶noun Genetics any of a group of closely similar gene sequences which are involved in regulating embryonic development in a wide range of species.
'homeobox' also found in these Oxford entries:

