| SHAFT | sad, hostile, anxious, frustrating, tenacious [patient] syndrome |
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| HP | halogen phosphorus; handicapped person; haptoglobin; hard palate; Harvard pump; health profession(al... |
| PS | pacemaker syndrome; paired stimulation; paradoxical sleep; paraspinal; parasympathetic; Parkinson sy... |
| shaft horsepower | A measure of the actual mechanical energy per unit time delivered to a turning shaft. 1 shaft horsepower = 1 electric horsepower = 550 ft-lb/second. (05 Dec 1998) |
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| boiler horsepower | A measure of the maximum rate of heat energy output of a steam generator. One boiler horsepower equals 33,480 Btu/hr output in steam. (05 Dec 1998) |
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| horsepower | 1. The power which a horse exerts. 2. <machinery> A unit of power, used in stating the power required to drive machinery, and in estimating the capabilities of animals or steam engines and other prime movers for doing work. It is the power required for the performance of work at the rate of 33,000 English units of work per minute; hence, it is the power that must be exerted in lifting 33,000 pounds at the rate of one foot per minute, or 550 pounds at the rate of one foot per second, or 55 pounds at the rate of ten feet per second, etc. The power of a draught horse, of average strength, working eight hours per day, is about four fifths of a standard horse power. Brake horse power, the net effective power of a prime mover, as a steam engine, water wheel, etc, in horse powers, as shown by a friction brake. See Friction brake, under Friction. Indicated horse power, the power exerted in the cylinder of an engine, stated in horse powers, estimated from the diameter and speed of the piston, and the mean effective pressure upon it as shown by an indicator. See Indicator. <engineering> Nominal horse power, a term still sometimes used in England to express certain proportions of cylinder, but having no value as a standard of measurement. 3. A machine worked by a horse, for driving other machinery; a horse motor. 4. <unit> A unit for measuring the rate of mechanical energy output. The term is usually applied to engines or electric motors to describe maximum output. 1 hp = 745.7 Watts = 0.746 kW = 2,545 Btu/hr. Source: Websters Dictionary (01 Mar 1998) |
| anterolateral surface of shaft of humerus | The surface of the humerus lateral to the intertubercular groove. Synonym: facies anterior lateralis corporis humeri, facies anterolateralis corporis humeri. (05 Mar 2000) |
| anteromedial surface of shaft of humerus | The surface of the humerus between the anterior and medial borders of the bone. Synonym: facies anterior medialis corporis humeri, facies anteromedialis corporis humeri. (05 Mar 2000) |
| medulla of hair shaft | The central axis of some hairs, containing a column of large vacuolated and keratinised cells; the medullary portion is surrounded by the cortex. (05 Mar 2000) |
| rock shaft | <machinery> A shaft that oscillates on its journals, instead of revolving, usually carrying levers by means of which it receives and communicates reciprocating motion, as in the valve gear of some steam engines. Synonym: rocker, rocking shaft, and way shaft. Origin: Cf. Rock, v. I. Source: Websters Dictionary (01 Mar 1998) |
| way shaft | 1. <machinery> A rock shaft. 2. <chemical> An interior shaft, usually one connecting two levels. Source: Websters Dictionary (01 Mar 1998) |
| cortex of hair shaft | The principal structural component of the hair shaft, composed of closely packed fusiform keratinised cells and invested by the cuticula pili. (05 Mar 2000) |
| posterior surface of shaft of humerus | The posterior surface of the humerus. Synonym: facies posterior corporis humeri. (05 Mar 2000) |
| hair shaft | The non-growing portion of a hair which protrudes from the skin, i.e., from the follicle. Synonym: scapus pili. (05 Mar 2000) |
| shaft | 1. The slender, smooth stem of an arrow; hence, an arrow. "His sleep, his meat, his drink, is him bereft, That lean he wax, and dry as is a shaft." (Chaucer) "A shaft hath three principal parts, the stele [stale], the feathers, and the head." (Ascham) 2. The long handle of a spear or similar weapon; hence, the weapon itself; anything regarded as a shaft to be thrown or darted; as, shafts of light. "And the thunder, Winged with red lightning and impetuous rage, Perhaps hath spent his shafts." (Milton) "Some kinds of literary pursuits . . . Have been attacked with all the shafts of ridicule." (V. Knox) 3. That which resembles in some degree the stem or handle of an arrow or a spear; a long, slender part, especially when cylindrical. <botany> Specifically: (a) The stem or midrib of a feather. The pole, or tongue, of a vehicle; also, a thill. The part of a candlestick which supports its branches. "Thou shalt make a candlestick of pure gold . . . His shaft, and his branches, his bowls, his knops, and his flowers, shall be of the same." (Ex. Xxv. 31) The handle or helve of certain tools, instruments, etc, as a hammer, a whip, etc. A pole, especially a Maypole. The body of a column; the cylindrical pillar between the capital and base. Also, the part of a chimney above the roof. Also, the spire of a steeple. A column, an obelisk, or other spire-shaped or columnar monument. "Bid time and nature gently spare The shaft we raise to thee. <machinery> " (Emerson) A solid or hollow cylinder or bar, having one or more journals on which it rests and revolves, and intended to carry one or more wheels or other revolving parts and to transmit power or motion; as, the shaft of a steam engine. 4. <zoology> A humming bird (Thaumastura cora) having two of the tail feathers next to the middle ones very long in the male; called also cora humming bird. 5. [Cf. G. Schacht. <chemical> A well-like excavation in the earth, perpendicular or nearly so, made for reaching and raising ore, for raising water, etc. 6. A long passage for the admission or outlet of air; an air shaft. 7. The chamber of a blast furnace. Line shaft, a furnace, in the form of a chimney, which is charged at the top and tapped at the bottom. Origin: OE. Shaft, schaft, AS. Sceaft; akin to D. Schacht, OHG. Scaft, G. Schaft, Dan. & Sw. Skaft handle, haft, Icel. Skapt, and probably to L. Scapus, Gr, a staff. Probably originally, a shaven or smoothed rod. Cf. Scape, Scepter, Shave. Source: Websters Dictionary (01 Mar 1998) |
| shaft of femur | The cylindrical shaft of the thigh bone. Synonym: corpus ossis femoris, body of thigh bone, corpus femoris. (05 Mar 2000) |
| shaft of fibula | The body of fibula; of the fibula elongated, rod-like portion which accounts for most of its length. Synonym: corpus fibulae. (05 Mar 2000) |
| shaft of humerus | The elongated rod-like portion of the humerus between the surgical neck proximally and the emergence of the supracondylar ridges distally. Synonym: corpus humeri. (05 Mar 2000) |
| shaft of radius | The triangular body of the radius located between the expanded proximal and distal extremities of the bone. Synonym: corpus radii. (05 Mar 2000) |
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