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Possible definitions for basker
aster
Any of various chiefly fall-blooming, leafy-stemmed herbaceous plants (Aster and closely related genera) in the composite family, often with showy flowers. Included among the asters are many perennial wildflowers and hundreds of garden varieties.
bacteria
Group of microscopic, single-celled organisms that are prokaryotes. They may have spherical, rodlike, or spiral shapes. They inhabit virtually all environments, incl. soil, water, organic matter, and the bodies of multicellular animals. Different types are distinguished in part by the structure of their cell walls, which is determined by gram stain. Many bacteria swim by means of flagella (see flagellum). The DNA of most bacteria is found in a single circular chromosome and is distributed throughout the cytoplasm rather than contained within a membrane-enclosed nucleus. Though some bacteria can cause food poisoning and infectious diseases in humans, most are harmless and many are beneficial. They are used in various industrial processes, especially in the food industry (e.g., the production of yogurt, cheeses, and pickles). Bacteria are divided into eubacteria and archaebacteria. See also budding bacteria, coliform bacteria, cyanobacteria, denitrifying bacteria, nitrifying bacteria, sheathed bacteria, sulfur bacteria.
badger
Any of eight species of stout-bodied carnivores (family Mustelidae) that possess an anal scent gland, powerful jaws, and large, heavy claws on their forefeet. Most species are brown, black, or gray, with markings on the face or body, and are found in SE Asia. Badgers dig to find food and to construct burrows and escape routes. The Amer. badger (Taxidea taxus), the only New World species, lives in the open, dry country of W N. America. Badgers feed mostly on small animals, especially rodents. Species may be 9-12 in. (23-30 cm) high and 13-32 in. (33-81 cm) long, excluding the 2- to 10-in. (5- to 23-cm) tail, and may weigh 2-48 lbs (1-22 kg). Badgers can be savage fighters.
Baer
Prussian-Estonian embryologist. Studying chick development with his friend Christian Pander (1794-1865), Baer expanded Pander's concept of germ-layer formation to all vertebrates, thereby laying the foundation for comparative embryology. He emphasized that embryos of one species could resemble embryos (but not adults) of another, and that the younger the embryo the greater the resemblance, a concept in line with his belief that development proceeds from simple to complex, from like to different. He also discovered the mammalian ovum. His On the Development of Animals (2 vols., 1828-37) surveyed all existing knowledge on vertebrate development and established embryology as a distinct subject of research.
Baeyer
German research chemist. He synthesized indigo and formulated its structure, discovered the phthalein dyes, and investigated such chemical families as the polyacetylenes, oxonium salts, and ...
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