Dictionary.com
Thesaurus.com
Synonyms

egg sac

American  

noun

  1. a silken case or capsule containing eggs of a female spider.


egg sac Scientific  
  1. The silken pouch in which many spiders deposit their eggs.

  2. Also called egg case


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The organism’s various states of evolution — as an egg sac or the Facehuggers that hatch from them — are back too.

From Los Angeles Times Aug. 12, 2025

One egg sac can carry hundreds of eggs.

From Salon Jun. 19, 2022

It can also spread when the spiderlings first hatch from the egg sac.

From Washington Post Mar. 15, 2022

A striped fishing spider spinning an egg sac was among the winners in the Wildlife Photographer of the Year photo competition sponsored by the Natural History Museum in London.

From Science Magazine Oct. 20, 2021

This egg sac is my great work—the finest thing I have ever made.”

From "Charlotte's Web" by E.B. White

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training