Medical Definition of HPI. history of present illness.What made you want to look up HPI? Please tell us where you read or heard it (including the quote, if possible). View Seen & Heard Highlights from Around the Site. Test Your Vocabulary! Test Your Vocabulary!10 Charming Words for Nasty People.edical Definition of HPI. history of present illness.
parÂ·aÂ·sitÂ·oid. n. An organism, usually an insect, that lives on or in a host organism during some period of its development and eventually kills its host. parâ²aÂ·sitÂ·oidâ² adj.
A parasite is a life form that survives off its host â taking valuable nutrients without contributing to the benefit of the host. Human parasites include worms, bacteria, protozoa and amoeba.Parasites often work by stealth. parasite is a life form that survives off its host â taking valuable nutrients without contributing to the benefit of the host. Human parasites include worms, bacteria, protozoa and amoeba.