| binary complex | A noncovalent complex of two molecules; often referring to the enzyme-substrate complex in an enzyme-catalyzed reaction. Compare: central complex, Michaelis complex. Synonym: enzyme-substrate complex. (05 Mar 2000) |
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| binary | Compounded or consisting of two things or parts; characterised by two (things). Binary arithmetic, that in which numbers are expressed according to the binary scale, or in which two figures only, 0 and 1, are used, in lieu of ten; the cipher multiplying everything by two, as in common arithmetic by ten. Thus, 1 is one; 10 is two; 11 is three; 100 is four, etc. <chemistry> Binary compound, the theory that all chemical compounds consist of two constituents of opposite and unlike qualities. Origin: L. Binarius, fr. Bini two by two, two at a time, fr. Root of bis twice; akin to E. Two: cf. F. Binaire. Source: Websters Dictionary (01 Mar 1998) |
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| binary acid | <chemistry> This refers to any compound that acts as an acid and which is composed of hydrogen plus only one other element. (09 Oct 1997) |
| binary collisions | <radiobiology> Collisions involving only two particles, multiparticle collisions (e.g., three-body collisions) are usually neglected or approximated. (09 Oct 1997) |
| binary combination | The name of a species of bacteria consisting of two parts: a generic name and a specific epithet. (05 Mar 2000) |
| binary compound | <chemistry> This refers to any compound that is composed of only two elements. (09 Oct 1997) |
| binary digit | The smallest unit of digital information expressed in the binary system of notation (either 0 or 1). The signal in computing. (05 Mar 2000) |
| 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) |
| binary nomenclature | The system of nomenclature in which the names of species are composed of two parts, a generic name and a specific epithet (species name, in botany). Synonym: binary nomenclature, binomial nomenclature. Origin: Carl von Linne (05 Mar 2000) |
| binary process | A random event with two exhaustive and mutually exclusive outcomes; a Bernoulli process. (05 Mar 2000) |
| aberrant complex | An anomalous electrocardiographic complex, more specifically an abnormal ventricular complex caused by abnormal intraventricular conduction of a supraventricular impulse. (05 Mar 2000) |
| activated complex | <chemistry> State of highest energy during a reaction. When reactants form the activated complex, bond breaking and bond formation is occurring. Synonym: transition state. (09 Jan 1998) |
| AIDS dementia complex | <immunology> A frequent cerebral condition in people with AIDS that results in the loss of cognitive capacity, affecting the ability to function in a social or occupational setting. Its cause has not been determined exactly, but may result from HIV infection of cells in the brain or an inflammatory reaction to such infection. (09 Oct 1997) |
| aids-related complex | A prodromal phase of infection with the human immunodeficiency virus (HIV). Laboratory criteria separating aids-related complex (arc) from aids include elevated or hyperactive B-cell humoral immune responses, compared to depressed or normal antibody reactivity in aids; follicular or mixed hyperplasia in arc lymph nodes, leading to lymphocyte degeneration and depletion more typical of aids; evolving succession of histopathological lesions such as localization of kaposi's sarcoma, signaling the transition to the full-blown aids. (12 Dec 1998) |
| alpha-keto acid dehydrogenase complex | See: alpha-keto acid dehydrogenase. Anaerobic dehydrogenase, an enzyme (usually a pyridinoenzyme) catalyzing the transfer of hydrogen from some metabolite to some acceptor molecule (e.g., NAD+, cytochrome) other than oxygen; e.g., lactate dehydrogenase's, isocitrate dehydrogenase's, and others in EC class 1, excluding those listed under aerobic dehydrogenase. (05 Mar 2000) |
| alpha-ketoglutarate dehydrogenase complex | alpha-ketoglutarate dehydrogenase |