egg hatching

См. также в других словарях:

• Egg donation — Intervention MeSH D018587 Egg donation is the process by which a woman provides one or several (usually 10 15) eggs (ova, oocytes) for purposes of assisted reproduction or biomedical research. For assisted reproduction purposes, egg d …   Wikipedia

• Hatching Magic — is a 2003 novel by Ann Downer. The sequel to Hatching Magic is The Dragon of Never Was, which was recently published in 2006.In Chapter One, the setting is 13th century England in a castle, where a king s wizard, Gideon, and his wyvern Wycca live …   Wikipedia

• egg tooth — n. a tooth like structure on the nose or beak of young reptiles and birds used to break the egg membrane or shell at the time of hatching …   English World dictionary

• egg tooth — egg′ tooth n. zool. a calcareous prominence at the tip of the beak or upper jaw of an embryonic bird or reptile, used to break through the eggshell at hatching • Etymology: 1890–95 …   From formal English to slang

• Egg tooth — In some egg laying animals, the egg tooth is a small, sharp, cranial protuberance used by offspring to break or tear through the egg s surface during hatching. It is present in most birds and reptiles, and similar structures exist in monotremes,… …   Wikipedia

• Egg (food) — Chicken egg redirects here. For the causality dilemma, see Chicken or the egg. On the left a chicken egg, the egg most commonly e …   Wikipedia

• Egg (biology) — Bird eggs and others (click on image for key) …   Wikipedia

• Hatching — For the emergence of young from an egg, see Egg (biology). For the crosshatch symbol, see Number sign. Albrecht Dürer, Veronica, engraving, 1513. Example of hatching (e.g., background) and cross hatching in many darker areas (visible if viewed at …   Wikipedia

• egg-burster — (ARTHROPODA: Insecta) Various cuticular structures that aid in hatching by rupturing the egg membranes; egg tooth; hatching spine; ruptor ovi; hatching tooth …   Dictionary of invertebrate zoology

• egg tooth — a calcareous prominence at the tip of the beak or upper jaw of an embryonic bird or reptile, used to break through the eggshell at hatching. [1890 95] * * * ▪ anatomy       tooth or toothlike structure used by the young of many egg laying species …   Universalium

• egg tooth — noun : a hard sharp prominence on the tip of the beak or nose of embryo birds and oviparous reptiles with which they break through the eggshell; also : an analogous chitinous prominence on the head of an insect * * * a calcareous prominence at… …   Useful english dictionary