| birth order | The sequence in which children are born into the family. (12 Dec 1998) |
|---|---|
| higher order conditioning | The use of a previously conditioned stimulus to condition further responses, in much the same way unconditioned stimuli are used. (05 Mar 2000) |
| second-order conditioning | The use of a previously successfully conditioned stimulus as the unconditioned stimulus for further conditioning. (05 Mar 2000) |
| second-order kinetics | A term describing the reaction rate of a chemical reaction in which the rate is proportional to the product of the concentrations (in moles) of two of the reactants (also called bimolecular kinetics), or to the square of the molar concentration of the reactant if there is only one. Such a reaction might have an equation like rate = k[A][B] or rate = k[A]2, where k is the reaction rate constant, [A] is the concentration of reactant A, and [B] is the concentration of reactant B. (09 Oct 1997) |
| order | <zoology> A taxonomic classification between class and family. (09 Oct 1997) |
| third-order kinetics | <pharmacology> A term describing the reaction rate of a chemical reaction in which the rate is proportional to the product of the concentrations (in moles) of three of the reactants, the product of the molar concentration of one reactant and the square of the molar concentration of another reactant, or the cube of the molar concentration of one of the reactants. Such a reaction might have an equation like rate = k[A][B][C] or rate = [A][B]2 or rate = [A]3, where k is the reaction rate constant, [A] is the concentration of reactant A, [B] is the concentration of reactant B, and [C] is the concentration of reactant C. (09 Oct 1997) |
| zero-order reaction | A reaction that proceeds at a particular rate independently of the concentration of the reactant or reactants. (05 Mar 2000) |
| first-order kinetics | A term describing the reaction rate of a chemical reaction in which the rate is proportional to the concentration (in moles) of only one of the reactants. Such a reaction might have an equation like rate = k[A], where k is the reaction rate constant and [A] is the concentration of a reactant A. (09 Oct 1997) |
| first-order reaction | A reaction the rate of which is proportional to the concentration of the single substance undergoing change; radioactive decay is a first-order process, defined by the equation -(dN/dt)=kN, where N is the number of atoms subject to decay (reaction), t is time, and k is the first-order decay (reaction) constant, i.e., the fraction of all atoms decaying per unit of time. See: decay constant, order. (05 Mar 2000) |
| macrorestriction map | <molecular biology> Map depicting the order of and distance between sites at which restriction enzymes cleave chromosomes. (09 Oct 1997) |
| map | 1. A representation of the surface of the earth, or of some portion of it, showing the relative position of the parts represented; usually on a flat surface. Also, such a representation of the celestial sphere, or of some part of it. There are five principal kinds of projection used in making maps: the orthographic, the stereographic, the globuar, the conical, and the cylindrical, or Mercator's projection. See Projection. 2. Anything which represents graphically a succession of events, states, or acts; as, an historical map. "Thus is his cheek the map of days outworn. <botany>" (Shak) Map lichen, a lichen (Lecidea geographica) growing on stones in curious maplike figures. Origin: From F. Mappe, in mappemonde map of the world, fr. L. Mappa napkin, signal cloth; a Punic word. Cf. Apron, Napkin, Nappe. Source: Websters Dictionary (01 Mar 1998) |
| map, contig | A map depicting the relative order of a linked library of small overlapping clones representing a complete chromosome segment. (12 Dec 1998) |
| map distance | The degree of separation of two loci on a linkage map, measured in morgans or centimorgans. (05 Mar 2000) |
| map-dot-fingerprint dystrophy | Fingerprint dystrophy accompanied by map-like patterns and microcystic epithelial inclusions. (05 Mar 2000) |
| MAP kinase | Mitogen activated protein kinases. (ERKs: externally regulated kinases) Serine threonine kinases that are activated when quiescent cells are treated with mitogens and therefore potentially transmit signal for entry into cell cycle. One target is trancription factor p62TCF. MAP kinase itself can be phosphorylated by MAP kinase kinase and this may in turn be controlled by RAF 1. Confusingly, do phosphorylate microtubule-associated proteins. (18 Nov 1997) |