| ISS | idiopathic short stature; injury severity score; International Society of Surgery; ion-scattering sp... |
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| CPL | caprine placental lactogen; conditioned pitch level; congenital pulmonary lymphangiectasia |
| DPT | Demerol, Phenergan, and Thorazine; dermatopontin; dichotic pitch discrimination test; diphtheria-per... |
| CE angle | Center-Edge angle |
| CP angle | Cerebello-Pontine angle |
| SAXS | Small Angle X-ray Scattering |
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| SALS | Small angle light scattering |
| SANS | Small angle neutron scattering |
| MALLS | multi-angle laser light scattering |
| AP | Absolute Pitch |
acute angle
| pitch angle scattering | <physics> Scattering (collisional, or due to wave-particle effects) of particles in velocity space, in which the pitch angle (see entry above) is changed. (09 Oct 1997) |
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| pitch angle | <physics> For a charged particle moving in a magnetic field, this is the angle arctan (v-perp/v-parallel), where v-parallel is the component of the particle's velocity parallel to the magnetic field, and v-perp is the perpendicular component. The pitch angle is zero when the particle moves purely parallel to the field, and 90-degrees when the particle has no parallel velocity at all. (09 Oct 1997) |
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| Compton scattering | <radiobiology> An attenuation process observed for x and gamma radiation in which an incident photon interacts with an orbital electron of an atom to produce a recoil electron and a scattered photon of energy less than the incident photon. (16 Dec 1997) |
| scattering | <radiobiology> The deflection of one particle as a result of collisions with other particles or with waves. See: Elastic. (09 Oct 1997) |
| scattering, radiation | The process in which energy is removed from a beam of light or other electromagnetic radiation and emitted without appreciable change in wavelength. May be considered as the change in direction of a particle or photon owing to a collision with another particle or system. (12 Dec 1998) |
| Thomson scattering | <radiobiology> Scattering of photons by electrons, in the classical (low photon energy) limit. Laser light passed through a plasma will experience Thomson scattering, the spread of the scattered light in energy provides a very good measurement of the electron temperature of the plasma. (09 Oct 1997) |
| light scattering | Particles suspended in a solution will cause scattering of light and the extent of the scattering is related to the size and shape of the particles (in a somewhat complex relationship). (18 Nov 1997) |
| Burgundy pitch | A resinous exudation from the spruce fir or Norway spruce, Picea excelsa; has been used as a counterirritant in the form of a plaster. Synonym: white pitch. (05 Mar 2000) |
| pitch | 1. To throw, generally with a definite aim or purpose; to cast; to hurl; to toss; as, to pitch quoits; to pitch hay; to pitch a ball. 2. To thrust or plant in the ground, as stakes or poles; hence, to fix firmly, as by means of poles; to establish; to arrange; as, to pitch a tent; to pitch a camp. 3. To set, face, or pave with rubble or undressed stones, as an embankment or a roadway. 4. To fix or set the tone of; as, to pitch a tune. 5. To set or fix, as a price or value. Pitched battle, a general battle; a battle in which the hostile forces have fixed positions; in distinction from a skirmish. To pitch into, to attack; to assault; to abuse. Origin: OE. Picchen; akin to E. Pick, pike. 1. To fix or place a tent or temporary habitation; to encamp. "Laban with his brethren pitched in the Mount of Gilead." 2. To light; to settle; to come to rest from flight. "The tree whereon they [the bees] pitch." (Mortimer) 3. To fix one's choise; with on or upon. "Pitch upon the best course of life, and custom will render it the more easy." (Tillotson) 4. To plunge or fall; especially, to fall forward; to decline or slope; as, to pitch from a precipice; the vessel pitches in a heavy sea; the field pitches toward the east. Pitch and pay, an old aphorism which inculcates ready-money payment, or payment on delivery of goods. 1. A thick, black, lustrous, and sticky substance obtained by boiling down tar. It is used in calking the seams of ships; also in coating rope, canvas, wood, ironwork, etc, to preserve them. "He that toucheth pitch shall be defiled therewith." (Ecclus. Xiii. 1) 2. <geology> See Pitchstone. Amboyna pitch, the resin of Dammara australis. See Kauri. Burgundy pitch. See Burgundy. Canada pitch, the resinous exudation of the hemlock tree (Abies Canadensis); hemlock gum. Jew's pitch, bitumen. Mineral pitch. See Bitumen and Asphalt. <chemical> Pitch coal, a black homogeneous peat, with a waxy luster. <botany> Pitch pine, any one of several species of pine, yielding pitch, especially. The Pinus rigida of North America. Origin: OE. Pich, AS. Pic, L. Pix; akin to Gr. 1. A throw; a toss; a cast, as of something from the hand; as, a good pitch in quoits. Pitch and toss, a game played by tossing up a coin, and calling "Heads or tails;" hence: To play pitch and toss with (anything), to be careless or trust to luck about it. "To play pitch and toss with the property of the country." . Pitch farthing. See Chuck farthing, under 5th Chuck. 2. That point of the ground on which the ball pitches or lights when bowled. 3. A point or peak; the extreme point or degree of elevation or depression; hence, a limit or bound. "Driven headlong from the pitch of heaven, down Into this deep." (Milton) "Enterprises of great pitch and moment." (Shak) "To lowest pitch of abject fortune." (Milton) "He lived when learning was at its highest pitch." (Addison) "The exact pitch, or limits, where temperance ends." (Sharp) 4. Height; stature. 5. A descent; a fall; a thrusting down. 6. The point where a declivity begins; hence, the declivity itself; a descending slope; the degree or rate of descent or slope; slant; as, a steep pitch in the road; the pitch of a roof. 7. The relative acuteness or gravity of a tone, determined by the number of vibrations which produce it; the place of any tone upon a scale of high and low. Musical tones with reference to absolute pitch, are named after the first seven letters of the alphabet; with reference to relative pitch, in a series of tones called the scale, they are called one, two, three, four, five, six, seven, eight. Eight is also one of a new scale an octave higher, as one is eight of a scale an octave lower. 8. <chemical> The limit of ground set to a miner who receives a share of the ore taken out. 9. <mechanics> The distance from center to center of any two adjacent teeth of gearing, measured on the pitch line; called also circular pitch. The length, measured along the axis, of a complete turn of the thread of a screw, or of the helical lines of the blades of a screw propeller. The distance between the centers of holes, as of rivet holes in boiler plates. Concert pitch, the point of contact of the pitch lines of two gears, or of a rack and pinion, which work together. Source: Websters Dictionary (01 Mar 1998) |
| pitch discrimination | The ability to differentiate tones. (12 Dec 1998) |
| pitch-ore | <chemical> Pitchblende. Source: Websters Dictionary (01 Mar 1998) |
| pitch perception | A dimension of auditory sensation varying with cycles per second of the sound stimulus. (12 Dec 1998) |
| pitch poisoning | A highly fatal disease of swine, usually caused by the ingestion of fragments of the clay pigeons used as targets by shooting clubs; some cases have been caused by consumption of other bituminous substances, such as road tar and tar paper. Synonym: clay pigeon poisoning. (05 Mar 2000) |
| pitch wart | A precancerous keratotic epidermal tumour, common among workers in pitch and coal tar derivatives. See: pitch-worker's cancer. (05 Mar 2000) |
| pitch-worker's cancer | Carcinoma of the skin of the face or neck, arms and hands, or the scrotum, resulting from exposure to carcinogens in pitch, which occurs naturally as asphalt, or as a residue in the distillation of tar. (05 Mar 2000) |
| white pitch | A resinous exudation from the spruce fir or Norway spruce, Picea excelsa; has been used as a counterirritant in the form of a plaster. Synonym: white pitch. (05 Mar 2000) |
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