| MF | magnetic field; meat free; medium frequency; megafarad; membrane filler; merthiolate-formaldehyde [s... |
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| FOM | figure-of-merit |
| NTFOM | normal tissue complication-based figure-of-merit |
| ROCF | Rey-Osterrieth Complex Figure |
| GEFT | Group Embedded Figure Test |
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| MFF | Matching Familiar Figure Test |
| achromatic | <microscopy> Literally, colour-free. A lens or prism is said to be achromatic when corrected for two colours. The remaining colour seen in an image formed by such a lens is said to be secondary chromatic aberration. A truly achromatic lens would transmit light without decomposing it spectrally and there would be no colour fringing in the image. A doublet, composed of a positive and negative lens element, can be made achromatic for two colours which much improves the performance for most of the others. (05 Aug 1998) |
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| achromatic aplanatic condenser | <microscopy> A well-corrected microscope condenser lens, corrected for chromatic and spherical aberrations and satisfying the sine condition. (05 Aug 1998) |
| achromatic apparatus | The nonstaining asters and spindle fibres in a dividing cell. (05 Mar 2000) |
| achromatic lens | A compound lens made of two or more lens's having different indices of refraction, so correlated as to minimise chromatic aberration. (05 Mar 2000) |
| achromatic objective | <microscopy> An objective that is corrected chromatic for two colours, and spherically for one, usually in the yellow-green part of the spectrum. (05 Aug 1998) |
| achromatic threshold | Threshold of visual sensation, the minimal light intensity evoking a visual sensation. Synonym: achromatic threshold, minimum light threshold. (05 Mar 2000) |
| achromatic vision | A severe congenital deficiency in colour perception, often associated with nystagmus and reduced visual acuity. Synonym: achromatic vision, monochromasia, monochromasy, monochromatism. Origin: G. A-priv. + chroma, colour, + opsis, vision (05 Mar 2000) |
| authority figure | |
| mitotic figure | The microscopic appearance of a cell undergoing mitosis; a cell of which the chromosomes are visible by the light microscope. (05 Mar 2000) |
| myelin figure | <cell biology> Structure that can form spontaneously when bilayer forming phospholipids (e.g. Egg lecithin) are added to water. They are reminiscent of the concentric layer structure of myelin. (18 Nov 1997) |
| interference figure | <microscopy> The conoscopic pattern of extinction positions of a crystal superimposed on the pattern of interference colours corresponding to the full cone of directions by which the crystal is illuminated, each direction showing its own interference colour. (05 Aug 1998) |
| figure | 1. The form of anything; shape; outline; appearance. "Flowers have all exquisite figures." (Bacon) 2. The representation of any form, as by drawing, painting, modeling, carving, embroidering, etc.; especially, a representation of the human body; as, a figure in bronze; a figure cut in marble. "A coin that bears the figure of an angel." (Shak) 3. A pattern in cloth, paper, or other manufactured article; a design wrought out in a fabric; as, the muslin was of a pretty figure. 4. <geometry> A diagram or drawing; made to represent a magnitude or the relation of two or more magnitudes; a surface or space inclosed on all sides; called superficial when inclosed by lines, and solid when inclosed by surface; any arrangement made up of points, lines, angles, surfaces, etc. 5. The appearance or impression made by the conduct or carrer of a person; as, a sorry figure. "I made some figure there." (Dryden) "Gentlemen of the best figure in the county." (Blackstone) 6. Distinguished appearance; magnificence; conspicuous representation; splendor; show. "That he may live in figure and indulgence." (Law) 7. A character or symbol representing a number; a numeral; a digit; as, 1, 2,3, etc. 8. Value, as expressed in numbers; price; as, the goods are estimated or sold at a low figure. "With nineteen thousand a year at the very lowest figure." (Thackeray) 9. A person, thing, or action, conceived of as analogous to another person, thing, or action, of which it thus becomes a type or representative. "Who is the figure of Him that was to come." (Rom. V. 14) 10. A mode of expressing abstract or immaterial ideas by words which suggest pictures or images from the physical world; pictorial language; a trope; hence, any deviation from the plainest form of statement. "To represent the imagination under the figure of a wing." (Macaulay) 11. <logic> The form of a syllogism with respect to the relative position of the middle term. 12. Any one of the several regular steps or movements made by a dancer. 13. <astronomy> A horoscope; the diagram of the aspects of the astrological houses. 14. Any short succession of notes, either as melody or as a group of chords, which produce a single complete and distinct impression. A form of melody or accompaniment kept up through a strain or passage; a musical or motive; a florid embellishment. Figures are often written upon the staff in music to denote the kind of measure. They are usually in the form of a fraction, the upper figure showing how many notes of the kind indicated by the lower are contained in one measure or bar. Thus, 2/4 signifies that the measure contains two quarter notes. The following are the principal figures used for this purpose: 2/2 2/4 2/8 4/2 2/4 4/8 3/2 3/4 3/8 6/4 6/4 6/8 Academy figure, Canceled figures, Lay figure, etc. See Academy, Cancel, Lay, etc. Figure caster, or Figure flinger, an astrologer. This figure caster." Figure flinging, the practice of astrology. Figure painting, a picture of the human figure, or the act or art of depicting the human figure. <chemical> Figure stone, agalmatolite. Figure weaving, the art or process of weaving figured fabrics. To cut a figure, to make a display. Origin: F, figure, L. Figura; akin to fingere to form, shape, feign. See Feign. Source: Websters Dictionary (01 Mar 1998) |
| figure and ground | That aspect of perception wherein the perceived is separated into at least two parts, each with different attributes but influencing one another. Figure is the most distinct; ground the least formed; e.g., a bird or tree (figure) seen against the sky (ground). (05 Mar 2000) |
| figure eight | <molecular biology> An intermediate structure shaped like a figure eight which forms during the recombination process between two plasmids, or circular pieces, of DNA. The two pieces of DNA attached to each other by covalent bond at this point. (10 Mar 1998) |
| figure-of-8 abnormality | A radiographic appearance associated with total anomalous drainage of the pulmonary venous circulation into enlarged right and anomalous left venae cavae, that produces a globular density above the heart; the silhouette suggests the figure 8. Synonym: snowman abnormality. (05 Mar 2000) |
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