: a statement in physiology: when a light source of a given size and intensity is just capable of producing visual sensation, reduction of either size or intensity will make it invisible
Cite this Entry
“Ricco's law.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Ricco%27s%20law. Accessed 27 Feb. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share