"Frozen sperm" refers to sperm that has been stored at a very cold temperature. It is usually saved for later use in procedures such as artificial insemination or in vitro fertilization. Full definition
«This study demonstrates that using frozen sperm taken by biopsy works as well for most patients in what matters most — pregnancy rates,» he said. (sciencedaily.com)
However, since he's the best looking bulldog I decided to freeze his sperm so that in time to come I could have his pups. (wtf1.com)
«Critically endangered species successfully reproduced using frozen sperm from ferret dead for 20 years: Genetic diversity of the species significantly increased providing fresh hope for the future survival of this near - extinct species.» (sciencedaily.com)