embryonic form (noun)

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• embryonic stem cell — noun Biology an unspecialised form of cell found in embryonic tissue, which, in the process of dividing and renewing, gives rise to the specialised cells which form the various organs and tissues of the body. Also, ES cell …  

• embryonic membrane — noun the inner membrane of embryos in higher vertebrates (especially when covering the head at birth) • Syn: ↑caul, ↑veil • Hypernyms: ↑fetal membrane • Part Holonyms: ↑placenta * * * noun …   Useful english dictionary

• embryonic membrane — noun Date: 1947 a structure (as the amnion) that derives from the fertilized ovum but does not form a part of the embryo …   New Collegiate Dictionary

• leiomyosarcoma — noun sarcoma of smooth muscle; occurs most often digestive tract or uterus or bladder or prostate • Hypernyms: ↑sarcoma * * * ˌlīōˌmīō+ noun Etymology: New Latin, blend of leiomyoma and sarcoma : a sarcoma composed in part of smooth muscle cells… …   Useful english dictionary

• protocorm — noun A tuberous mass of cells that is the embryonic form of orchids and club mosses …   Wiktionary

• Sino-Tibetan languages — Superfamily of languages whose two branches are the Sinitic or Chinese languages and the Tibeto Burman family, an assemblage of several hundred very diverse languages spoken by about 65 million people from northern Pakistan east to Vietnam, and… …   Universalium

• spongioblast — noun any of various columnar epithelial cells in the central nervous system that develop into neuroglia • Hypernyms: ↑columnar cell, ↑columnar epithelial cell * * * ˈspənjēōˌblast, ˈspän noun ( s) Etymology: International Scientific Vocabulary… …   Useful english dictionary

• germ cell — noun a spermatozoon or an ovum; a cell responsible for transmitting DNA to the next generation • Syn: ↑reproductive cell, ↑sex cell • Hypernyms: ↑cell • Hyponyms: ↑gamete • Part Holonyms: ↑ …   Useful english dictionary

• adult stem cell — noun Biology a form of stem cell found in some bodily organs and tissues which is itself undifferentiated but has the capacity for self renewal and differentiation into certain types of specialised cells, usually only of the cell type existing… …  

• auditory pit — noun : the indentation of thickened surface ectoderm to form the embryonic ear …   Useful english dictionary

• United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium