| ss | semis; one half; 반 |
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| beta [Greek letter beta] | an anomer of a carbohydrate; buffer capacity; carbon separated from a carboxyl by one other carbon i... |
| D1 | diagonal one; first dorsal vertebra |
| 1-D | one-dimensional |
| DO | Doctor of Osteopathy (one of two fully recognized medical practioners in the US-the other being MD);... |
| dominance-subordination | Relationship between individuals when one individual threatens or becomes aggressive and the other individual remains passive or attempts to escape. (12 Dec 1998) |
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| dominance threshold number | The number at which 50 percent of the total dominance measure for a given stratum is represented by one or more plant species when ranked in descending order of abundance (i.e., from most to least abundant), when this number is immediately exceeded, the dominant species for the stratum are realised. (09 Oct 1997) |
| incomplete dominance | <genetics> Two alleles of a gene which result in distinctly different phenotypes, but when they are both inherited together in an individual (one from the mother and one from the father - called heterozygosity), the individual ends up with a blend of the two phenotypes. For example: if one allele is for red hair and the other allele is for blue hair, then the individual will have purple hair. (This is in contrast to codominance, where the individual would inherit patches of blue and patches of red hair). (13 Nov 1997) |
| false dominance | Simulation by a recessive trait of the pedigree of dominant inheritance (i.e., recurrence in several generations) by repeated, and often occult, consanguineous matings. Synonym: false dominance. (05 Mar 2000) |
| at one | 1. In concord or friendship; in agreement (with each other); as, to be, bring, make, or set, at one, i. E, to be or bring in or to a state of agreement or reconciliation. "If gentil men, or othere of hir contree Were wrothe, she wolde bringen hem atoon." (Chaucer) 2. Of the same opinion; agreed; as, on these points we are at one. 3. Together. "He and Aufidius can no more atone Than violentest contrariety." (Shak) 2. To stand as an equivalent; to make reparation, compensation, or amends, for an offense or a crime. "The murderer fell, and blood atoned for blood." (Pope) "The ministry not atoning for their former conduct by any wise or popular measure." (Junius) Origin: OE. At on, atone, atoon, attone. Source: Websters Dictionary (01 Mar 1998) |
| benzalcoumaran-3-one | 1. 2-benzylidene-3(2H)-benzofuranone;the parent compound of a series of plant pigments; they are substituted coumaranones, and may be formed from chalcones. They are often found as glycosides. 2. A class of compounds based on aurone. Synonym: benzalcoumaran-3-one. (05 Mar 2000) |
| bufenolides (one double bond) | (05 Mar 2000) |
| gel diffusion precipitin tests in one dimension | Precipitin test's in which antigen solution and antibody incorporated in agar are layered in tubes, permitting effective diffusion in the vertical dimension; the antibody-containing agar may be overlaid directly with antigen solution (single (gel) diffusion in one dimension). (05 Mar 2000) |
| Gomori's one-step trichrome stain | <technique> A connective tissue stain that uses haematoxylin and a dye mixture containing chromotrope 2R and light green or aniline blue; muscle fibres appear red, collagen is green (or blue if aniline blue is used), and nuclei are blue to black. (05 Mar 2000) |
| NAD 3 alpha-hydroxy-5 alpha-pregnan-20-one-oxidoreductase | <enzyme> From rat liver microsomes Registry number: EC 1.1.1.- Synonym: nad-3-hp-20-oor (26 Jun 1999) |
| one-carbon fragment | The formyl group or the methyl group that takes part in transformylation or transmethylation reactions; by means of these reactions, a group containing a single carbon atom is added to a compound being biosynthesised, adding a methyl group (as in thymidine formation), adding a hydroxymethyl group (as in serine biosynthesis), or closing a ring (as in purine formation). (05 Mar 2000) |
| one-carbon group transferases | <enzyme> A subclass of transferases that transfer chemical groups containing a single carbon. These include the methyltransferases, the hydroxymethyl and formyl transferases, the carboxyl and carbamoyl transferases, and the amidinotransferases. Registry number: EC 2.1 (12 Dec 1998) |
| one-hand | Employing one hand; as, the one-hand alphabet. See: dactylology. (04 Mar 1998) |
| one-horned uterus | An obsolete term for unicorn uterus. (05 Mar 2000) |
| one-step procedure | A procedure in which a surgical biopsy is performed under general anesthesia and if cancer is found, a mastectomy or lumpectomy is done immediately as part of the same operation. (09 Oct 1997) |