molecular condom
n.— «For a decade now, scientists have been working to develop an HIV-blocking vaginal gel, a microbicide often called a molecular condom.» —“Better than a Condom?” by Jeneen Interlandi Newsweek Aug. 11, 2009. (source: Double-Tongued Dictionary)
Further reading
Scientists have named some recently discovered species of tree frogs after characters from Star Trek. Why? Because of the boops and trills and other sounds that these frogs make. And: naming your children with the virtues you hope they’ll...
Scientists decided to name some newly discovered tree frogs in Madagascar based on the boops and trills they make, which reminded the researchers of Star Trek. Among the scientific names for these critters that belong to the rare Boophis frog genus...