| aphid | <zoology> One of the genus Aphis; an aphidian. They are small insects that suck the juices of plants. Some genera are asterochiton, eriosoma, and phylloxera. (25 Jun 1999) |
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| aphidian | <zoology> Of or pertaining to the family Aphidae. One of the aphides; an aphid. Source: Websters Dictionary (01 Mar 1998) |
| aphidicolin | <chemical> Tetradecahydro-3,9-dihydroxy-4,11b-dimethyl-8,11a-methano-11ah-cyclohepta(a)naphthalene-4,9-dimethanol. An antiviral antibiotic produced by cephalosporium aphidicola and other fungi. It inhibits the growth of eukaryotic cells and certain animal viruses by selectively inhibiting the cellular replication of DNA polymerase II or the viral-induced DNA polymerases. The drug may be useful for controlling excessive cell proliferation in patients with cancer, psoriasis or other dermatitis with little or no adverse effect upon non-multiplying cells. Pharmacological action: antiviral agents, enzyme inhibitors. Chemical name: 9,15-Cyclo-C,18-dinor-14,15-secoandrostane-4,17-dimethanol, 3,17-dihydroxy-4-methyl-, (3alpha,4alpha,5alpha,17alpha)- (12 Dec 1998) |
| aphidivorous | <zoology> Devouring aphides; aphidophagous. Origin: Aphis + L. Vorare to devour. Source: Websters Dictionary (01 Mar 1998) |
| aphidophagous | <zoology> Feeding upon aphides, or plant lice, as do beetles of the family Coccinellidae. Origin: Aphis + Gr. To eat. Source: Websters Dictionary (01 Mar 1998) |
| aphilopony | An obsolete term for an aversion, or lack of desire, to work. Origin: G. A-priv. + philo, to like, + ponos, work (05 Mar 2000) |
| aphis | <zoology> A genus of insects belonging to the order Hemiptera and family Aphidae, including numerous species known as plant lice and green flies. Besides the true males and females, there is a race of wingless asexual individuals which have the power of producing living young in rapid succession, and these in turn may produce others of the same kind for several generations, before sexual individuals appear. They suck the sap of plants by means of a tubular proboscis, and owing to the wonderful rapidity of their reproduction become very destructive to vegetation. Many of the Aphidae excrete honeydew from two tubes near the end of the body. (25 Jun 1999) |
| aphis lion | <zoology> The larva of the lacewinged flies (Chrysopa), which feeds voraciously upon aphids. The name is also applied to the larvae of the ladybugs (Coccinella). Source: Websters Dictionary (01 Mar 1998) |
| aphonia | <clinical sign, neurology> Inability to produce speech sounds. Often due to a disease of the voice producing structures. See: alalia. (27 Sep 1997) |
| aphonia paralytica | Aphonia due to paralysis of the vocal cords. Spastic aphonia, aphonia caused by spasmodic contraction of the laryngeal adductor muscles provoked by attempted phonation. (05 Mar 2000) |
| aphonic | Relating to aphonia. Synonym: aphonous. (05 Mar 2000) |
| aphonic pectoriloquy | <clinical sign> An obsolete sign: good conduction of the whisper in nonpurulent pleural effusions. Synonym: aphonic pectoriloquy. (05 Mar 2000) |
| aphonogelia | Inability to laugh out loud. Origin: G. A-priv. + phone, sound, + gelan, to laugh (05 Mar 2000) |
| aphonous | Relating to aphonia. Synonym: aphonous. (05 Mar 2000) |
| aphony | <clinical sign> Loss of voice or vocal utterance. Origin: NL. Aphonia, Gr, fr. Voiceless; priv. + voice: cf. F. Aphonie. Source: Websters Dictionary (01 Mar 1998) |