No:653 - facial (L. facialis from facies face) of or pertaining to the face.
No:654 - factor (L. 'maker') any of several substances or activities that are necessary to produce a result, e.g. a coagulation factor. Often, use of the term 'factor' indicates that the chemical nature of the substance or its mechanism of action is unknown, as in endocrinology, where 'factors' are renamed as 'hormones' when their chemical nature is determined.
No:655 - faecal pertaining to or of the nature of feces.
No:656 - feces (L. faeces, pl. of faex refuse) the excrement discharged from the intestines, consisting of bacteria, cells exfoliated from the intestines, secretions, chiefly of the liver, and a small amount of food residue.
No:657 - fasciculation a small local contraction of muscles, visible through the skin, representing a spontaneous discharge of a number of fibres innervated by a single motor nerve filament.
No:658 - fatal causing death, deadly; mortal; lethal.
No:659 - febrile (L. febrilis) pertaining to or characterized by fever.
No:660 - feedback the return of some of the output of a system as input so as to exert some control in the process.
No:661 - femoral (L. femoralis) pertaining to the femur, or to the thigh.
No:662 - fermentation (L. fermentatio) the anaerobic enzymatic conversion of organic compounds, especially carbohydrates, to simpler compounds, especially to ethyl alcohol, resulting in energy in the form of adenosine triphosphate (ATP); the process is used in the production of alcohol, bread, vinegar; and other food or industrial products. It differs from respiration in that organic substances rather than molecular oxygen are used as electron acceptors. Fermentation occurs widely in bacteria and yeasts, the process usually being identified by the product formed; e.g. , acetic, alcoholic, butyric, and lactic fermentation are those that result in the formation of acetic acid, alcohol, butyric acid, and lactic acid, respectively.
No:663 - ferriprive suffering from, or characterized by iron deficiency.
No:664 - fertility the capacity to conceive or induce conception.
No:665 - fibrillation a small, local, involuntary contraction of muscle, invisible under the skin, resulting from spontaneous activation of single muscle cells or muscle fibres.
No:666 - fibrin the insoluble protein formed from fibrinogen by the proteolytic action of thrombin during normal clotting of blood. Fibrin forms the essential portion of the blood clot.
No:667 - fibrinolytic pertaining to, characterized by, or causing the dissolution of fibrin by enzymatic action
No:668 - fibrosis the formation of fibrous tissue; fibroid or fibrous degeneration
No:669 - filmcoated coated by a thin transparent sheet of cellulose acetate or similar material with an emulsion that is sensitive to light or radiation.
No:670 - filtration the passage of a liquid through a filter, accomplished by gravity, pressure, or vacuum (suction).
No:671 - firstpass connected with the first barrier the medicine has to pass, where it is filtered.
No:672 - fissure (L. fissura) any cleft or groove, normal or otherwise; especially a deep fold in the cerebral cortex which involves the entire thickness of the brain wall.
No:673 - fistula (L. 'pipe') an abnormal passage or communication, usually between two internal organs, or leading from an internal organ to the surface of the body; frequently designated according to the organs or parts with which it communicates, as anovaginal, brochocutaneous, hepatopleural, pulmonoperitoneal, rectovaginal, urethrovaginal, and the like. Such passages are frequently created experimentally for the purpose of obtaining body secretions for physiologic study.
No:674 - fixation (L. fixatio) 1. the act or operation of holding, suturing, or fastening in a fixed position. 2. the condition of being held in a fixed position. 3. in psychiatry, a term with two related but distinct meanings : (1) arrest of development at a particular stage, which like regression (return to an earlier stage), if temporary is a normal reaction to setbacks and difficulties but if protracted or frequent is a cause of developmental failures and emotional problems, and (2) a close and suffocating attachment to another person, especially a childhood figure, such as one's mother or father. Both meanings are derived from psychoanalytic theory and refer to 'fixation' of libidinal energy either in a specific erogenous zone, hence fixation at the oral, anal, or phallic stage, or in a specific object, hence mother or father fixation. 4. the use of a fixative (q.v.) to preserve histological or cytological specimens. 5. in chemistry, the process whereby a substance is removed from the gaseous or solution phase and localized, as in carbon dioxide fixation or nitrogen fixation. 6. in ophthalmology, direction of the gaze so that the visual image of the object falls on the fovea centralis. 7. in film processing, the chemical removal of all undeveloped salts of the film emulsion, leaving only the developed silver to form a permanent image.
No:675 - flaccid (L. flaccidus) weak, lax and soft.
No:676 - flatulence (L. flatulentia) the presence of excessive amounts of air or gases in the stomach or intestine, leading to distention of the organs.
No:677 - flegmon or phlegmon (Gr. phlegmon) 1. a spreading, diffuse inflammatory reaction to infection with microaerophilic streptococci, which forms a suppurative or gangrenous and undermining lesion that may extend into deep subcutaneous tissues and muscles, creating multiple small pockets of pus. Called also phlegmonous cellulitis. Cf. cellulitis and erysipelas. 2. a solid, swollen, inflamed mass of pancreatic tissue occurring as a complication of acute pancreatitis, which may subside spontaneously or become secondarily infected and develop into an abscess.
No:678 - flexion (L. flexio) in gynaecology, a displacement of the uterus in which the organ is bent so far forward or backward that an acute angle forms between the fundus and the cervix.
No:679 - fluor albus (L. 'a flow', a discharge) leucorrhea.
No:680 - flush transient, episodic redness of the face and neck caused by certain diseases, ingestion of certain drugs or other substances, heat, emotional factors, or physical exertion.
No:681 - flutter a rapid vibration or pulsation.
No:682 - foetal of or pertaining to a fetus; pertaining to in utero development after the embryonic period.
No:683 - foetoplacental pertaining to the fetus and placenta.
No:684 - foetotoxic toxic to the foetus in utero.
No:685 - folliculitis inflammation of a follicle or follicles; used ordinarily in reference to hair follicles, but sometimes in relation to follicles of other kinds.
No:686 - fontanelle (Fr., dim. of fontaine spring, filter) a soft spot, such as one of the membrane-covered spaces (fonticuli cranii (NA)) remaining in the incompletely ossified skull of a fetus or infant.
No:687 - fraction in chemistry, one of the separable constituents of a substance.
No:688 - fracture (L. fractura, from frangere to break) a break or rupture in a bone.
No:689 - frequency 1. the number of occurrences of a periodic or recurrent process per unit time, e.g. the number of vibrations of a particle per second or the number of repetitions of a complete wave form (cycles) per second. 2. the number of members of a population or statistical sample falling in a particular class. 3. relative frequency; the average number of occurrences of a particular event in a large number of repeated trials.
No:690 - frigidity coldness; especially, lack of sexual response in the female.
No:691 - function (L. functio, from fungi to do) the special, normal, or proper physiologic activity of an organ or part.
No:692 - fundamental pertaining to a base or foundation.
No:693 - fungicide an agent that destroys fungi.
No:694 - fungistatic inhibiting the growth of fungi.
No:695 - fungus a general term used to denote a group of eukaryotic protists, including mushrooms, yeasts, rusts, moulds, smuts, etc., which are characterized by the absence of chlorophyll and by the presence of a rigid cell wall composed of chitin, mannans, and sometimes cellulose. They are usually of simple morphological form or show some reversible cellular specialization, such as the formation of pseudoparenchymatous tissue in the fruiting body of a mushroom. The dimorphic fungi grow, according to environmental conditions, as moulds or yeasts.
No:696 - furunculosis 1. the persistent sequential occurrence of furuncles over a period of weeks or months. 2. the simultaneous occurrence of a number of furuncles.