| phi | 1. The 21st letter of the Greek alphabet. 2. (Φ) Symbol for phenyl; potential energy; magnetic flux. 3. (φ) Symbol for plane angle; volume fraction; quantum yield; the dihedral angle of rotation about the N-Ca bond associated with a peptide bond. (05 Mar 2000) |
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| phi phenomenon | An illusion of movement, which occurs by means of successive visual impressions at intervals of 1/15 to 1/20 sec; when an occluder is passed from one eye to the other while a small distant light is observed, the light seems to move with the occluder in exophoria, but in an opposite direction in oesophoria. (05 Mar 2000) |
| phi X 174 | <molecular biology> Bacteriophage of E. Coli with a single stranded DNA genome and an icosahedral shell. This was the first DNA phage to be fully sequenced: the genome consists of 10 genes, some of which are overlapping genes. (18 Nov 1997) |
| phial | A glass vessel or bottle, especially a small bottle for medicines; a vial. Origin: F. Fiole, L. Phiala a broad, flat, shallow cup or bowl, Gr. Cf. Vial. Source: Websters Dictionary (01 Mar 1998) |
| phialide | In fungi, a conidiogenous cell in which the meristematic end remains unchanged as successive conidia are extruded out to form chains. Origin: G. Phiale, a broad, flat vessel (05 Mar 2000) |
| phialoconidium | A conidium produced by a phialide. (05 Mar 2000) |
| Phialophora | A genus of fungi of which at least two species, Phialophora verrucosa and Phialophora dermatitidis, cause chromoblastomycosis. Origin: G. Phiale, a broad, flat vessel, + phoreo, to carry (05 Mar 2000) |
| Philadelphia chromosome | <genetics, oncology> Characteristic chromosomal abnormality in which a portion of chromosome 22 is translocated to chromosome 9. This abnormality is found in nearly all cases of chronic myeloid leukaemia and some cases of acute lymphoblastic leukaemia. (30 Sep 1997) |
| Philadelphia cocktail | An intravenous slow injection of from 1000 to 2000 ml of 10% dextrose in isotonic saline to which thiamine hydrochloride and 25 units of insulin are added; used in acute alcoholism. Synonym: Philadelphia cocktail. (05 Mar 2000) |
| philander | To make love to women; to play the male flirt. "You can't go philandering after her again." (G. Eliot) Origin: Gr. Fond of men; loving + man. <zoology> A South American opossum (Didelphys philander). An Australian bandicoot (Perameles lagotis). Source: Websters Dictionary (01 Mar 1998) |
| philanderer | One who hangs about women; a male flirt. Source: Websters Dictionary (01 Mar 1998) |
| philanthropic hospital | A hospital supported in part by voluntary contributions and under the control of a local, usually self-appointed, board of managers; a non-profit hospital. Synonym: philanthropic hospital. (05 Mar 2000) |
| philately | Study of stamps or postal markings. It usually refers to the design and commemorative aspects of the stamp. (12 Dec 1998) |
| philatory | A kind of transparent reliquary with an ornamental top. Origin: OF. Filatiere, philatiere. See Phylactery. Source: Websters Dictionary (01 Mar 1998) |
| philauty | Self-love; selfishness. Origin: Gr.; loving + self. Source: Websters Dictionary (01 Mar 1998) |
| bacteriophage phi 6 | Virulent bacteriophage and sole member of the genus cystovirus that infects pseudomonas species. The virion has a segmented genome consisting of three pieces of doubled-stranded DNA and also contains a unique lipid-containing membrane. (12 Dec 1998) |
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| bacteriophage phi x 174 | The type species of the genus microvirus. A prototype of the small virulent DNA coliphages, it is composed of a single strand of supercoiled circular DNA, which on infection, is converted to a double-stranded replicative form by a host enzyme. (12 Dec 1998) |
| peptide phi | A 27-amino acid peptide with histidine at the n-terminal and isoleucine amide at the c-terminal. The exact amino acid composition of the peptide is species dependent. The peptide is secreted in the intestine, but is found in the nervous system, many organs, and in the majority of peripheral tissues. It has a wide range of biological actions, affecting the cardiovascular, gastrointestinal, respiratory, and central nervous systems. (12 Dec 1998) |