| blastopore | During gastrulation cells on the surface of the embryo move into the interior to form the mesoderm and endoderm. The opening formed by this invagination of cells is the blastopore. It is an opening from the archenteron, the primitive gut, to the exterior. In some animals this opening becomes the anus, whilst in others it closes up and the anus opens at the same spot or nearby. In some animals, for example chick, invagination occurs without a true blastopore and the site at which the cells move in (primitive streak) may be termed a virtual blastopore. (18 Nov 1997) |
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| blastoporic canal | An obsolete term for primitive pit. (05 Mar 2000) |
| blastosphere | <biology> The hollow globe or sphere formed by the arrangement of the blastomeres on the periphery of an impregnated ovum. See: Illust. Of Invagination. Source: Websters Dictionary (01 Mar 1998) |
| blastospore | Synonym: Blastoconidium. Origin: blasto-+ G. Sporos, seed (05 Mar 2000) |
| blastostyle | <zoology> In certain hydroids, an imperfect zooid, whose special function is to produce medusoid buds. See Hydroidea, and Athecata. Origin: Gr. Sprout, bud + a pillar. Source: Websters Dictionary (01 Mar 1998) |
| blastotomy | Experimental destruction of one or more blastomeres. Synonym: blastomerotomy. Origin: blasto-+ G. Tome, incision (05 Mar 2000) |
| blasts | Immature blood cells. (12 Dec 1998) |
| blastula | <embryology> Stage of embryonic development of animals near the end of cleavage but before gastrulation. In animals where cleavage (cell division) involves the whole egg, the blastula usually consists of a hollow ball of cells. (18 Nov 1997) |
| blastular | Pertaining to the blastula. (05 Mar 2000) |
| blastulation | Formation of the blastula or blastocyst from the morula. (05 Mar 2000) |
| blastule | <biology> Same as Blastula. Source: Websters Dictionary (01 Mar 1998) |
| Blatin's syndrome | The peculiar trembling or vibratory sensation felt on palpation of a hydatid cyst. Synonym: Blatin's syndrome, hydatid fremitus. (05 Mar 2000) |
| Blatin, Marc | <person> French physician, *1878. See: Blatin's syndrome. (05 Mar 2000) |
| Blatta | A genus of insects (family Blattidae) that includes the abundant oriental cockroach, Blatta orientalis. The dried insect yields antihydropin, a diuretic principle. Origin: L. Cockroach (05 Mar 2000) |
| Blattella | A genus of cockroaches, (family Blattidae) that includes Blattella germanica, the German cockroach or croton bug, probably the most familiar and widespread of the cockroaches. Origin: L. Blatta, cockroach (05 Mar 2000) |
Synonyms : Blood Physiological Phenomenon, Phenomena, Blood Physiologic, Phenomenon, Blood Physiological, Physiologic Phenomena, Blood, Physiological Phenomenon, Blood
Synonyms : Blood Physiological Processes, Physiologic Processes, Blood, Physiological Processes, Blood, Processes, Blood Physiologic, Processes, Blood Physiological
Synonyms : Physiology, Blood, Blood Physiologies, Physiologies, Blood
Synonyms : Blood Platelet Disorder, Disorder, Blood Platelet, Disorders, Blood Platelet, Platelet Disorder, Blood, Platelet Disorders, Blood, Thrombocytopathies
Synonyms : Blood Platelet, Platelet, Platelet, Blood, Platelets, Blood, Thrombocyte
| bloat |
become bloated or swollen or puff up; "The dead man's stomach was bloated" swelling of the rumen or intestinal tract of domestic animals caused by excessive gas make bloated or swollen; "Hunger bloated the child's belly"
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| blastula |
early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs
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| Blocadren |
timolol: a beta blocker (trade name Blocadren) administered after heart attacks
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| bleeding |
flow of blood from a ruptured blood vessels
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| Bloch |
United States composer (born in Switzerland) who composed symphonies and chamber music and choral music and a piano sonata and an opera (1880-1959)
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| BL | a man who is Black |
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| BL | a mangrove of the West Indies and the southern Florida coast |
| BL | an Australian tree resembling the black mangrove of the West Indies and Florida |
| BL | dusky gray food fish found from Louisiana and Florida southward |
| BL | a form of whist in which players avoid winning tricks containing hearts of the queen of spades |
| BL | van used by police to transport prisoners |
| BL | an illegal market in which goods or currencies are bought and sold in violation of rationing or controls |
| BL | people who engage in illicit trade |
| BL | deal in illegally, such as arms or liquor |
| BL | someone who engages illegally in trade in scarce or controlled commodities |
| BL | deal on the black market |
| BL | Pacific marlin |