| beaked pelvis | A pelvic deformity in osteomalacia; the pressure of the trunk on the sacrum and lateral pressure of the femoral heads produce a pelvic aperture that is three-cornered or has the shape of a heart or cloverleaf, while the pubic bone becomes beak-shaped. Synonym: beaked pelvis, rostrate pelvis. (05 Mar 2000) |
|---|---|
| beaker | A thin glass vessel, with a lip (beak) for pouring, used as containers for liquids. (05 Mar 2000) |
| beaker cell | 1. <pathology> Cell of the epithelial lining of small intestine that secretes mucus and has a very well developed Golgi apparatus. 2. <zoology> Cell type characteristic of larval lepidopteran midgut, containing a potent H ATPase and thought to be involved in maintenance of ion and pH gradients. (10 Oct 1997) |
| beakhead | 1. An ornament used in rich Norman doorways, resembling a head with a beak. 2. Same as Beak. Source: Websters Dictionary (01 Mar 1998) |
| beal | <medicine> A small inflammatory tumour; a pustule. [Prov. Eng. See: Boil a tumour. Source: Websters Dictionary (01 Mar 1998) |
| Beale | Lionel S., British physician, 1828-1906. See: Beale's cell. (05 Mar 2000) |
| Beale's cell | A bipolar ganglion cell of the heart with one spiral and one straight prolongation. (05 Mar 2000) |
| beam | <radiobiology> Stream of particles or electromagnetic radiation travelling in a single direction. (09 Oct 1997) |
| beam dump | <radiobiology> A mass of shielding material which absorbs the energy of a beam of particles or electromagnetic radiation. (09 Oct 1997) |
| beam splitter | <radiobiology> Optical device for dividing a beam of electromagnetic radiation into two or more separate beams. (09 Oct 1997) |
| beam tree | <botany> A tree (Pyrus aria) related to the apple. Origin: AS. Beam a tree. See: Beam. Source: Websters Dictionary (01 Mar 1998) |
| beam-beam reaction | <radiobiology> Fusion reaction which occurs from the collision of two fast ions originating in injected neutral beams. (09 Oct 1997) |
| beam-plasma reaction | <radiobiology> Fusion reaction which occurs from the collision of a fast beam ion with a thermal plasma ion. (09 Oct 1997) |
| beam-wall reaction | <radiobiology> Fusion reaction which occurs from the collision of a fast beam ion with an ion embedded in or adsorbed onto the reactor wall. (09 Oct 1997) |
| beambird | <zoology> A small European flycatcher (Muscicapa gricola), so called because it often nests on a beam in a building. Source: Websters Dictionary (01 Mar 1998) |