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Endoderm

/ˈendəˌdərm/ Noun 1. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult. (wiktionary.org) 2. The innermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the lining of the gut and associated structures. (Google Dictionary) 3. The innermost of the three primitive germ layers of the embryo; from it are derived the epithelium of the pharynx, respiratory tract (except the nose), digestive tract, bladder, and urethra. (Dorland’s Medical Dictionary for Health Consumers.) 4. The inner germ layer that develops into the lining of the digestive and respiratory systems. (wordnetweb.princeton.edu) Word origin: From endo- + Ancient Greek δέρμα (derma,...

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Endolymph

/ˈendəˌlimf/ 1. The fluid contained in the membranous labyrinth of the inner ear. It is also called Scarpa’s fluid, after Antonio Scarpa. (wikipedia.org) 2. The fluid inside the labyrinth of the inner ear. (wiktionary.org) Syn: Scarpa’s...

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Endometrium

/ˌendōˈmētrēəm/ Noun, pl. endometria 1. The inner mucous membrane of the mammalian uterus. (wikipedia.org) 2. The mucous membrane that lines the uterus in mammals and in which fertilized eggs are implanted. (wiktionary.org) 3. The tissue lining the uterus, it is sloughed off during the woman’s menstrual period, and afterward grows back and slowly gets thicker and thicker until the next period. (biology-online.org) 4. The mucous membrane lining the uterus, which thickens during the menstrual cycle in preparation for possible implantation of an embryo. (Google Dictionary) 5. The mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition. (wordnetweb.princeton.edu) Word origin: From endo- (“inner”) +‎ Late Latin metrium (“womb”), from Ancient Greek μήτριον (“of a...

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Endothelium

/ˌendəˈTHēlēəm/ Noun, pl. endothelia 1. The thin layer of cells that lines the interior surface of blood vessels and lymphatic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. (wikipedia.org) 2. A thin layer of flat epithelial cells that lines the heart, serous cavities, lymph vessels, and blood vessels. (wiktionary.org) 3. The layer of epithelial cells that lines the cavities of the heart and of the blood and lymph vessels and the serous cavities of the body, originating from the mesoderm. (biology-online.org) 4. The tissue that forms a single layer of cells lining various organs and cavities of the body, esp. the blood vessels, heart, and lymphatic vessels. It is formed from the embryonic mesoderm. (Google Dictionary) 5. An epithelium of mesoblastic origin; a thin layer of flattened cells that lines the inside of some body cavities....

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Entomology

Noun 1. Branch of biology that deals with the study of insects. 2. The scientific study of insects, particularly their taxonomy, morphology, physiology, ecology, as well as their beneficial and harmful impact on humans (biology-online.org) 3. Scientific study of insects, a branch of arthropodology, which in turn is a branch of biology. (wikipedia.com)   Syn: insectology Word origin: From French entomologie, from Ancient Greek ἔντομον , éntomon, insect + –logie (from Ancient Greek -λογία, -logía,...

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