IPA: /ˌkrɪptəˈspɔːrɪdɪəm/
KK: /ˌkrɪptoʊspəˈrɪdɪəm/
A tiny organism that lives in the intestines of animals and humans, which can cause severe diarrhea, especially in people with weak immune systems.
Cryptosporidium can be found in contaminated water and can lead to serious health issues.
Cryptosporidium is formed from "crypto-" (from Greek "kryptos", meaning hidden) and "sporidium" (from Greek "spora", meaning seed or spore). The word refers to a hidden spore, which is characteristic of this genus of parasites that can cause gastrointestinal illness.
Think of 'hidden' ('crypto-') spores ('sporidium') that can cause illness — this helps you remember that cryptosporidium refers to a hidden parasite.
No commonly confused words.