| Buchner funnel | A porcelain funnel that contains a perforated porcelain plate upon which filter paper can be laid. (05 Mar 2000) |
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| Buchner, Eduard | <person> German chemist and Nobel laureate, 1860-1917. See: Buchner extract, Buchner funnel. (05 Mar 2000) |
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| Buchner extract | A cell-free extract of yeast, such as was prepared by Eduard and Hans Buchner and observed to catalyze alcoholic fermentation; this observation essentially eliminated "vitalism" as being responsible for biological chemical reactions and initiated the beginnings of modern biochemistry (enzymology). (05 Mar 2000) |
| Buchner, Hans | <person> German bacteriologist, 1850-1902. See: Buchner extract. (05 Mar 2000) |
| Martegiani's funnel | The funnel-shaped dilation on the optic disk that indicates the beginning of the hyaloid canal. Synonym: Martegiani's area. (05 Mar 2000) |
| pial funnel | The pia-lined channel in which each blood vessel entering the brain lies suspended; essentially, the pial funnel's are perivascular extensions of the subarachnoid space. (05 Mar 2000) |
| funnel | 1. A vessel of the shape of an inverted hollow cone, terminating below in a pipe, and used for conveying liquids into a close vessel; a tunnel. 2. A passage or avenue for a fluid or flowing substance; specifically, a smoke flue or pipe; the iron chimney of a steamship or the like. <chemical> Funnel box, one of the ropes or rods steadying a steamer's funnel. Origin: OE. Funel, fonel, prob. Through OF. Fr, L. Fundibulum, infundibulum, funnel, fr. Infundere to pour in; in in + fundere to pour; cf. Armor. Founil funnel, W. Ffynel air hole, chimney. See Fuse. Source: Websters Dictionary (01 Mar 1998) |
| funnel breast | Caved-in chest. Usually an unimportant isolated finding evident at birth. (Funnel chest can occasionally be part of a connective tissue disorder such as Marfan syndrome). (12 Dec 1998) |
| funnel chest | A developmental anomaly in which the lower sternum is posteriorly dislocated and concavely deformed, resulting in a funnel-shaped thorax. (12 Dec 1998) |
| funnel-shaped pelvis | A pelvis in which the pelvic inlet dimensions are normal, but the outlet is contracted in the transverse or in both transverse and anteroposterior diameters. (05 Mar 2000) |