What does HIPO stand for?

Hemihypertrophy, Intestinal Web, Preauricular Skin Tag, and Congenital Corneal Opacity Syndrome - Medicine (DMAA)

Hierarchical Input Process Output - Diagram used in software assessment (NITA)

Hierarchy of Input-Processing-Output

Hierarchy plus Input-Process-Output - Computer science

High Potential Incident - Environmental science (COE)

High Power (ACAE)

Highway Post Office - Bus or truck equipped with mail distribution facilities

Hilfspolizei - Auxiliary Police - German

Hospital Indicator for Physicians' Orders

High-Potential Employee

Hippolytus Marsilius - Deceased, 1529 - Authority cited in pre-1607 legal work (DSA)