- egg tooth
- noun Date: 1893 a hard sharp prominence on the beak of an unhatched bird or the nose of an unhatched reptile that is used to break through the eggshell
New Collegiate Dictionary. 2001.
egg tooth
Look at other dictionaries:
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 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
egg-tooth — see egg burster … Dictionary of invertebrate zoology
egg tooth — noun A small, sharp, cranial protuberance used by offspring to break or tear through the eggs surface during hatching … Wiktionary
egg tooth — noun a hard white protuberance on the beak or jaw of an embryo bird or reptile, used for breaking out of the shell … English new terms dictionary
egg tooth — /ˈɛg tuθ/ (say eg toohth) noun a calcareous point on the tip of the beak or upper jaw, by which an unhatched bird or reptile breaks through the eggshell on hatching …
Egg (biology) — Bird eggs and others (click on image for key) … Wikipedia
