chaperone effect
n.— «Snyder believes that the stem cells held in these “biobridge” scaffolds produce a positive effect by nurturing and sustaining the nerve cells in the recipient rodent. This is what he and other scientists refer to as the “chaperone effect.”» —“Stem cell scaffolds repair rodent spinal cord damage” by Roxanne Khamsi New Scientist Feb. 18, 2006. (source: Double-Tongued Dictionary)
Further reading
If someone urges you to spill the tea, they probably don’t want you tipping over a hot beverage. Originally, the tea here was the letter T, as in “truth.” To spill the T means to “pass along truthful information.” Plus...
Marta, who studies English in Kyiv, Ukraine, says she was reading Louisa May Alcott’s Little Women (Bookshop|Amazon) when she encountered the word parasol, noting its similarity to a Ukrainian word for “umbrella,” парасоля. Both...