| piperonyl butoxide | <chemical> An insecticide synergist, especially for pyrethroids and rotenone. Pharmacological action: pesticide synergists. Chemical name: 1,3-Benzodioxole, 5-((2-(2-butoxyethoxy)ethoxy)methyl)-6-propyl- (12 Dec 1998) |
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| pyrethrins | <chemical> The active insecticidal constituent of pyrethrum flowers. Pyrethrin I is the pyretholone ester of chrysanthemummonocarboxylic acid and pyrethrin II is the pyretholone ester of chrysanthemumdicarboxylic acid monomethyl ester. Pharmacological action: insecticide, botanical. (12 Dec 1998) |
| sea foam | 1. Foam of sea water. 2. <chemical> Meerschaum. Synonym: sea froth. Source: Websters Dictionary (01 Mar 1998) |
| human fibrin foam | A dry artificial sponge of human fibrin prepared by clotting with thrombin a foam of a solution of human fibrinogen; the clotted foam is dried from the frozen state and heated; used as a topical anticoagulant. (05 Mar 2000) |
| fibrin foam | <chemical> A dry artificial sterile sponge of fibrin prepared by clotting with thrombin a foam or solution of fibrinogen. It is used in conjunction with thrombin as a haemostatic in surgery at sites where bleeding cannot be controlled by more common methods. Pharmacological action: haemostatics, tissue adhesives. (12 Dec 1998) |
| foam | 1. To gather foam; to froth; as, the billows foam. "He foameth, and gnasheth with his teeth." (Mark ix. 18) 2. To form foam, or become filled with foam; said of a steam boiler when the water is unduly agitated and frothy, as because of chemical action. Origin: AS. F?man. See Foam, n. Source: Websters Dictionary (01 Mar 1998) |
| foam cell | <pathology> Lipid laden macrophages and, to a lesser extent smooth muscle cells, found in fatty streaks on the arterial wall. (18 Nov 1997) |
| foam cells | Lipid-laden macrophages originating from monocytes or from smooth muscle cells. (12 Dec 1998) |
| foam stability test | A test for foetal pulmonary maturity, determined by the ability of pulmonary surfactant in amniotic fluid to generate stable foam in the presence of ethanol after mechanical agitation. Synonym: shake test. (05 Mar 2000) |