| fis | fission |
|---|---|
| AW | able to work; above waist; abrupt withdrawal; alcohol withdrawal; alveolar wall; anterior wall; atom... |
| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
| AAS | Aarskog-Scott [syndrome]; acid aspiration syndrome; alcoholic abstinence syndrome; American Academy ... |
| ABC | absolute basophil count; absolute bone conduction; acalculous biliary colic; acid balance control; a... |
| AAS | Atomic Absorption Spectrometry |
|---|---|
| AAS | Atomic Absorption Spectrophotometry |
| AAS | Atomic Absorption Spectroscopy |
| AFM | Atomic Force Microscope |
| AA | Atomic absorption |
| binary fission | <cell biology> Division of a cell into two daughter cells after DNA replication and nuclear division (mitosis). A form of asexual reproduction. (09 Oct 1997) |
|---|---|
| bud fission | 1. <biology> The formation of a new individual, either animal or vegetable, by a process of budding; an asexual method of reproduction; gemmulation; gemmiparity. See Budding. 2. <botany> The arrangement of buds on the stalk; also, of leaves in the bud. Origin: Cf. F. Gemmation. Source: Websters Dictionary (01 Mar 1998) |
| multiple fission | Division of the nucleus, simultaneously or successively, into a number of daughter nuclei, followed by division of the cell body into an equal number of parts, each containing a nucleus. (05 Mar 2000) |
| simple fission | Division of the nucleus and then the cell body into two parts. See: binary fission. (05 Mar 2000) |
| nuclear fission | Nuclear reaction in which the nucleus of a heavy atom such as uranium or plutonium is split into two approximately equal parts by a neutron, charged particle, or photon. (12 Dec 1998) |
| fission | A type of cell division in which overall (i.e., not localised) cell growth is followed by septum formation which typically divides the fully grown cell into two similar or identical cells. (09 Oct 1997) |
| fission fungi | <biology> An order of Schizophyta, including the so-called fission fungi, or bacteria. See Schizophyta, in the Supplement. Origin: NL, fr. Gr. To split +, -, a fungus. Source: Websters Dictionary (01 Mar 1998) |
| fission product | An atomic species produced in the course of the fission of a larger atom such as 235U. (05 Mar 2000) |
| fission reactor | <radiobiology> A device that can initiate and control a self-sustaining series of nuclear fissions, typically used for either research or the production of energy or nuclear weapons materials. (09 Oct 1997) |
| fission yeast | <fungus> Species of fission yeast commonly used for studies on cell cycle control because there is a distinct G2 phase to the cycle. Only distantly related to the budding yeast Saccharomyces cerevisiae Saccharomyces cerevisiae. A further advantage is that some mammalian introns are processed correctly. (18 Nov 1997) |
| fusion-fission hybrid | <radiobiology> Proposed nuclear reactor relying on both fusion and fission reactions. A central fusion chamber would produce neutrons to induce fission in a surrounding blanket of fissionable material. The neutron source could also be used to convert other materials into additional fissile fuels (breeder hybrid). Safer than a plain fission reactor because the fission fuel relies on the fusion neutrons, and therefore cannot achieve criticality. On the other hand, hybrids are more complex because of the fusion power core, and still generate fission's radioactive byproducts. But a fusion-fission hybrid could be more economical and have less stringent technical requirements than a pure fusion reactor. (05 Jan 1998) |
| atomic | 1. Of or pertaining to atoms. 2. Extremely minute; tiny. Atomic philosophy, or Doctrine of atoms, a system which assuming that atoms are endued with gravity and motion accounted thus for the origin and formation of all things. This philosophy was first broached by Leucippus, was developed by Democritus, and afterward improved by Epicurus, and hence is sometimes denominated the Epicurean philosophy. <chemistry> Atomic theory, or the Doctrine of definite proportions, the weight of the atom of an element as compared with the weight of the atom of hydrogen, taken as a standard. Origin: Cf. F. Atomique. Source: Websters Dictionary (01 Mar 1998) |
| atomic absorption spectrophotometry | Determination of concentration by the ability of atoms to absorb radiant energy of specific wavelengths. (05 Mar 2000) |
| atomic bomb | <physics, radiobiology> A weapon with a large explosive power due to the sudden release of energy when the nuclei of heavy atoms such as plutonium-239 or uranium-235 are split. This fission is brought about by the bombardment of the fuel with neutrons, setting off a chain reaction. The bomb releases shock, blast, heat, light, and lethal radiation. The world's first atomic bomb was successfully tested by the United States on July 16, 1945. (13 Nov 1997) |
| atomic core | The nucleus plus the nonvalence electrons. (05 Mar 2000) |
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