egg case

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egg case

1. A protective capsule that contains eggs, produced by certain insects, mollusks, and elasmobranch fishes.
2. See egg sac.


(ˌoʊ əˈθi kə)

n., pl. -cae (-sē).
a case or capsule containing eggs, as that of certain insects and mollusks.
[1850–55; < New Latin; see oo-, theca]
o`o•the′cal, adj.
References in periodicals archive ?
Look among the seaweed for the "mermaid's purse" which is actually the empty egg case of a ray or dog fish.
Glue your egg case to the middle of your painted paper.
Bamboo sharks (Chiloscyllium punctatum) develop inside a leathery egg case (left) that opens slightly near hatching time.
Scientists discovered only recently--in the late 1980s--that a baby nautilus can take 10 to 14 months to develop within its egg case.
The zygote alone only has the potential to form a blastocyst that then has to hatch from the egg case in order to implant into the uterus and begin the next stage of development.
It looks like it may be a chicken and egg case, where the infrastructure doesn't exist because there aren't the vehicles for it, and vice-versa.
One reason health and agriculture officials were able to trace salmonella to the Umpqua Dairy plant is that unlike the strain in the egg case, the strain in the dairy was very uncommon.
Praying mantis egg case (Ootheca mantidis, Sang Piao Xiao) strengthens kidney energy and helps with urinary incontinence and bedwetting in children.
Omega-3 claims are all over the egg case, from brands like Land O Lakes to Best, Gold Circle Farms, Full Spectrum Farms, Giving Nature, Safeway, and more.
ANSWERS: 1 Madrid; 2 Cones of extinct volcanos; 3 Hummus; 4 Copenhagen; 5 A docile horse with a steady gait favoured by ladies; 6 Newmarket; 7 The krona; 8 Raymond Chandler; 9 Beatrix Potter; 10 The empty egg case of a dogfish.