spermatophore

noun

sper·​mato·​phore (ˌ)spər-ˈma-tə-ˌfȯr How to pronounce spermatophore (audio)
: a capsule, packet, or mass enclosing spermatozoa that is extruded by the male of various lower animals (such as insects) and is transferred to the reproductive tract of the female

Examples of spermatophore in a Sentence

Recent Examples on the Web
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And, as if that weren’t enough, the male packs the spermatophore with a defensive substance called lucibufagin that protects the female and her offspring from being eaten. Rena Kingery, Discover Magazine, 20 Dec. 2021 Eventually, the male deposits a spermatophore on the ground and, using his tail as an anchor, abruptly shoves the female forward over the packet of sperm, which latches onto her genital opening. Bradley Allf, Smithsonian Magazine, 1 Mar. 2021 Fertilization is internal, with the male inserting a spermatophore, or sperm packet, into the female as their abdomens press together. National Geographic, 16 Sep. 2020 Typically, octopuses mate when the male shoots a package of sperm called a spermatophore at the female through the water. Annalee Newitz, Ars Technica, 27 Sep. 2017 Male katydids, for example, produce a spermatophore during mating that can be up to 30 percent of their body mass, which contains both ejaculate and a mass of edible jelly. Joshua Rapp Learn, Smithsonian, 20 July 2017

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1849, in the meaning defined above

Time Traveler
The first known use of spermatophore was circa 1849

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Cite this Entry

“Spermatophore.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spermatophore. Accessed 9 Sep. 2025.

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