| 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) |
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| 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) |