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rock-inhabiting fern of northern North America growing in massive tufts and having fronds resembling parsley American parsley fern , American rock brake , Cryptogramma acrostichoides
massive plantigrade carnivorous or omnivorous mammals with long shaggy coats and strong claws bear
scientific research that requires massive capital investment but is expected to yield very significant results big science
wild sheep of mountainous regions of western North America having massive curled horns bighorn , bighorn sheep , cimarron , Ovis canadensis , Rocky Mountain bighorn , Rocky Mountain sheep
massive tropical tree with deep ridges on its massive trunk and bearing large pods of seeds covered with silky floss; source of the silky kapok fiber Bombay ceiba , Ceiba pentandra , ceiba tree , God tree , kapok , silk-cotton tree , white silk-cotton tree
massive reef-building coral having a convoluted and furrowed surface brain coral
style of architecture developed in the Byzantine Empire developed after the 5th century; massive domes with square bases and round arches and spires and much use of mosaics Byzantine architecture
(meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere convection
large voracious aquatic reptile having a long snout with massive jaws and sharp teeth and a body covered with bony plates; of sluggish tropical waters crocodile
primitive style of masonry characterized by use of massive stones of irregular shape and size cyclopean masonry
South African vine having a massive rootstock covered with deeply fissured bark Dioscorea elephantipes , elephant's-foot , Hottentot's bread vine , Hottentot bread vine , tortoise plant
bomb that explodes in midair and releases a massive burst of electromagnetic energy sufficient to disable computers and telecommunications without killing people or damaging buildings E-bomb , microwave bomb
nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy fission , nuclear fission
nuclear reaction with nuclei combining to make massive nuclei fusion
nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy fusion , nuclear fusion , nuclear fusion reaction
massive grouping of galaxies in the direction of Centaurus and Hydra whose gravitational attraction is believed to cause deviations in the paths of other galaxies Great Attractor
massive monument with a square base and four triangular sides; begun by Cheops around 2700 BC as royal tombs in ancient Egypt Great Pyramid , Pyramid , Pyramids of Egypt
any of various finches of Europe or America having a massive and powerful bill grosbeak , grossbeak
Japanese mathematical physicist who proposed that nuclear forces are mediated by massive particles called mesons which are analogous to the photon in mediating electromagnetic forces (1907-1981) Hideki Yukawa , Yukawa
massive thick-skinned herbivorous animal living in or around rivers of tropical Africa hippo , hippopotamus , Hippopotamus amphibius , river horse
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