ID50
symbol
—used for the dose of an infectious organism required to produce infection in 50 percent of the experimental subjects
Cite this Entry
“ID50.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/ID50. Accessed 6 Dec. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share