somatomedin
noun
so·mato·me·din ˌsō-mə-tō-ˈmē-dᵊn 
sō-ˌma-tə-
: any of several endogenous peptides produced especially in the liver that are dependent on and probably mediate growth hormone activity (as in sulfate uptake by epiphyseal cartilage)
Word History
Etymology
somat- + intermediary + -in entry 1
First Known Use
1971, in the meaning defined above
Medical Definition
somatomedin
noun
so·ma·to·me·din sō-ˌmat-ə-ˈmēd-ᵊn, ˌsō-mət-ə-
: any of several endogenous peptides produced especially in the liver that are dependent on and mediate growth hormone activity (as in sulfate uptake by epiphyseal cartilage)
specifically : insulin-like growth factor