sperm

1 of 2

noun

ˈspərm 

plural sperm or sperms

1

a

: semen

b

: a male gamete

especially : spermatozoon sense 1

2

: a product of the sperm whale

sperm-

2 of 2

combining form

variants or spermo- or sperma- or spermi-

: seed : germ : sperm

spermatheca

spermicide

Examples of sperm in a Sentence

Noun

The sperm fertilizes the egg.

Recent Examples on the Web

Noun

In the first three mating sessions, the medaka released over 50 percent of their daily sperm output. —Laura Baisas, Popular Science, 8 Jan. 2025

These include Sertoli cells and germ cells that produce sperm and Leydig cells that produce testosterone. —Matthew Wosnitzer, Verywell Health, 5 Jan. 2025

After one of the couple’s twin daughters had a baby, DNA testing revealed that the baby and the twins were related only to the woman who had conceived with the help of Danzer — not to her husband who provided his sperm for his wife’s insemination. —Noah Goldberg, Los Angeles Times, 19 Dec. 2024

Semen contains about 5% sperm and 95% seminal fluid. —Mark Gurarie, Health, 14 Dec. 2024

Word History

Etymology

Noun

Middle English, from Middle French esperme, sperme, from Late Latin spermat-, sperma, from Greek, literally, seed, from speirein to sow; probably akin to Armenian p'aratem I dispense

Combining form

Greek sperm-, spermo-, from sperma

First Known Use

Noun

14th century, in the meaning defined at sense 1a

Phrases Containing sperm

• sperm bank
• sperm cell
• sperm count
• sperm donor
• sperm nucleus
• sperm oil
• sperm whale

Kids Definition

sperm

noun

ˈspərm 

plural sperm or sperms

1

: semen

2

: a mobile male gamete that has a long and thin or rounded head and a long thin tail that acts as a flagellum

called also spermatozoon, sperm cell

Medical Definition

sperm

noun

ˈspərm 

plural sperm or sperms

1

: the male impregnating fluid : semen

2

: a male gamete

especially : spermatozoon