hypothalamico-hypophyseal
adjective
hy·po·tha·lam·ico-hy·po·phy·se·al
variants:
also hypothalamico-hypophysial \ ˌhī-pō-thə-ˈlam-i-ˌko-(ˌ)hī-ˌpäf-ə-ˈsē-əl, -ˌhī-pə-fə-, -ˈzē-əl, -ˌhī-pə-ˈfiz-ē-əl 
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