Definition of developmental biology in US English:

developmental biology

noun

  • The physiological, anatomical, and (in later use) genetic and molecular processes involved in the ontogenesis of an organism; the branch of biology dealing with this.

Origin

Late 19th century. From developmental + biology.

Pronunciation

developmental biology

/dɪˌvɛləpˌmɛntl bʌɪˈɒlədʒi/