ep·i·de·mi·ol·o·gy 
(ĕp′ĭ-dē′mē-ŏlə-jē, -dĕm′ē-)
(ĕp′ĭ-dē′mē-ŏlə-jē, -dĕm′ē-)n.
The branch of medicine that deals with the study of the causes, distribution, and control of disease in populations.
[Medieval Latin epidēmia, an epidemic; see EPIDEMIC + -LOGY.]
ep′i·de′mi·o·logic (-ə-lŏjĭk), ep′i·de′mi·o·logi·cal (-ĭ-kəl) adj.
ep′i·de′mi·o·logi·cal·ly adv.
ep′i·de′mi·olo·gist n.
- clean (someone's) clock
- clean someone's clock
- Cleanthes
- clean up
- cleanup
- clean up act
- clean up (one's) act
- clean up one's act
- clear
- clearable
- clearance
- clear-cut
- clearer
- clear-eyed
- clearheaded
- clearheadedly
- clearheadedness
- clearing
- clearing-house
- clearinghouse
- clearly
- clearness
- clear out
- clear-sighted
- clear-sightedly