| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
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| ISIS | image selected in vivo spectroscopy; imaging science and information system; information system-imag... |
| DF | decapacitation factor; decontamination factor; deferoxamine; deficiency factor; defined flora [anima... |
| FGF | father's grandfather; fibroblast growth factor; fresh gas flow |
| FGM | father's grandmother |
| CADIA | Computer assisted densitometric image analysis |
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| DIA | Digital image analysis |
| FAMIS | Factor Analysis of Medical Image Sequences |
| IA | Image Analysis |
| ISIS | Image Selected in Vivo Spectroscopy |
| father | 1. One who has begotten a child, whether son or daughter; a generator; a male parent. "A wise son maketh a glad father." (Prov. X. 1) 2. A male ancestor more remote than a parent; a progenitor; especially, a first ancestor; a founder of a race or family; in the plural, fathers, ancestors. "David slept with his fathers." (1 Kings II. 10) "Abraham, who is the father of us all." (Rom. Iv. 16) 3. One who performs the offices of a parent by maintenance, affetionate care, counsel, or protection. "I was a father to the poor." (Job xxix. 16) "He hath made me a father to Pharaoh, and lord of all his house." (Gen. Xiv. 8) 4. A respectful mode of address to an old man. "And Joash the king og Israel came down unto him [Elisha], . . . And said, O my father, my father!" (2 Kings xiii. 14) 5. A senator of ancient Rome. 6. A dignitary of the church, a superior of a convent, a confessor (called also father confessor), or a priest; also, the eldest member of a profession, or of a legislative assembly, etc. "Bless you, good father friar !" (Shak) 7. One of the chief esslesiastical authorities of the first centuries after Christ; often spoken of collectively as the Fathers; as, the Latin, Greek, or apostolic Fathers. 8. One who, or that which, gives origin; an originator; a producer, author, or contriver; the first to practice any art, profession, or occupation; a distinguished example or teacher. "The father of all such as handle the harp and organ." (Gen. Iv. 21) "Might be the father, Harry, to that thought." (Shak) "The father of good news." (Shak) 9. The Supreme Being and Creator; God; in theology, the first person in the Trinity. "Our Father, which art in heaven." (Matt. Vi. 9) "Now had the almighty Father from above . . . Bent down his eye." (Milton) Adoptive father, one who adopts the child of another, treating it as his own. Apostolic father, Conscript fathers, etc. See Apostolic, Conscript, etc. Father in God, a title given to bishops. Father of lies, the Devil. Father of the bar, the oldest practitioner at the bar. Fathers of the city, the aldermen. Father of the Faithful. Abraham. Mohammed, or one of the sultans, his successors. Father of the house, the member of a legislative body who has had the longest continuous service. most Reverend Father in God, a title given to archbishops and metropolitans, as to the archbishops of Canterbury and York. Natural father, the father of an illegitimate child. Putative father, one who is presumed to be the father of an illegitimate child; the supposed father. Spiritual father. A religious teacher or guide, especially. One instrumental in leading a soul to God. The pope. Origin: OE. Fader, AS. Faeder; akin to OS. Fadar, D. Vader, OHG. Fatar, G. Vater, Icel. Fair Sw. & Dan. Fader, OIr. Athir, L. Pater, Gr, Skr. Pitr, perh. Fr. Skr. Pa protect,. Cf. Papa, Paternal, Patriot, Potential, Pablum. Source: Websters Dictionary (01 Mar 1998) |
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| father-child relations | Interaction between the father and the child. (12 Dec 1998) |
| father complex | Female counterpart of the Oedipus complex in the male; a term used to describe unresolved conflicts during childhood development toward the father which subsequently influence a woman's relationships with men. Synonym: father complex. Origin: Electra, daughter of Agamemnon (05 Mar 2000) |
| father-in-law | The father of one's husband or wife; correlative to son-in-law and daughter-in-law. A man who marries a woman having children already, is sometimes, though erroneously, called their father-in-law. Source: Websters Dictionary (01 Mar 1998) |
| father-lasher | <zoology> A European marine fish (Cottus bubalis), allied to the sculpin. Synonym: lucky proach. Source: Websters Dictionary (01 Mar 1998) |
| father longlegs | <zoology> See Daddy longlegs. Source: Websters Dictionary (01 Mar 1998) |
| Abbe theory of image formation | <optics, physics> Abbe's theory is based on the fact that a non-self-luminous particle, which is illuminated by an extraneous source, gives rise to diffracted light rays, in addition to the dioptric pencil. He stated that to form a good microscopical image as many of the diffracted rays as possible should be intercepted by the objective. With closely ruled lines, his theory is easily demonstrated by observing the back lens of the objective, for here the diffracted rays can be observed directly if the aperture diaphragm is closed. It can be shown that, when the illumination is arranged to exclude the diffracted images, resolution is lost. (11 Mar 1998) |
| accidental image | Continuation of visual impression after cessation of stimuli causing the original image. (12 Dec 1998) |
| body image | A term for the concept which each individual has of his own body as an object in and bound by space, independently and apart from all other objects. (12 Dec 1998) |
| radiographic image enhancement | Improvement in the quality of an X-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed. (12 Dec 1998) |
| radiographic image interpretation, computer-assisted | Computer systems or networks designed to provide radiographic interpretive information. (12 Dec 1998) |
| real image | An image formed by the convergence of the actual rays of light from an object. Synonym: inverted image. (05 Mar 2000) |
| catatropic image | <ophthalmology, physiology> The two images formed by the anterior and posterior surfaces of the cornea and the two images formed by the anterior and posterior surfaces of the lens. Synonym: catatropic image, Purkinje images, Sanson's images. (05 Mar 2000) |
| virtual image | <microscopy> Such as seen in a mirror or through a magnifier. A virtual image has no real existence in space as does a real image from a lens. It does have a definite location, however, caused by the angles of divergence of the rays received by the eye. This can be shown by the common school experiment of placing a pin coincident with its mirror image behind a sheet of glass acting as a partial mirror. Its location can also be placed in design by extrapolating backwards to a focus. If a magnifier is used as it should be, with the object at its focus, the virtual image is at infinity. The same is true for a microscope focused for the relaxed eye. See: distance of virtual image. (05 Aug 1998) |
| visual image | A collection of foci corresponding to all the luminous points of an object. (05 Mar 2000) |
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