| pablum | A precooked infant food, a mixture of wheat, oat, and corn meals, wheat embryo, alfalfa leaves, brewers' yeast, iron, and sodium chloride. Origin: L. Pabulum, nourishment, fr. Pasco, to nourish (05 Mar 2000) |
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| pabular | Relating to, or of the nature of, pabulum. (05 Mar 2000) |
| pabulum | The means of nutriment to animals or plants; food; nourishment; hence, that which feeds or sustains, as fuel for a fire; that upon which the mind or soul is nourished; as, intellectual pabulum. Origin: L, akin to pascere to pasture. See Pastor. Source: Websters Dictionary (01 Mar 1998) |
| PAC1 phosphatase | <enzyme> An immediate-early mitogen-inducible tyrosine phosphatase; a map kinase phosphatase; amino acid sequence has been determined Registry number: EC 3.1.3.- Synonym: pac-1 (26 Jun 1999) |
| Pac1 ribonuclease | <enzyme> A homolog of e. Coli rnase III from schizosaccharomyces pombe; amino acid sequence given in first source Registry number: EC 3.1.26.- Synonym: rnase pac1, pac1 gene product (26 Jun 1999) |
| paca | <zoology> A small South American rodent (Coelogenys paca), having blackish brown fur, with four parallel rows of white spots along its sides; the spotted cavy. It is nearly allied to the agouti and the Guinea pig. Origin: Pg, from the native name. Source: Websters Dictionary (01 Mar 1998) |
| pacane | <botany> A species of hickory. See Pecan. Source: Websters Dictionary (01 Mar 1998) |
| Pacchioni, Antonio | <person> Italian anatomist, 1665-1726. See: pacchionian bodies, pacchionian corpuscles, pacchionian depressions, pacchionian glands, pacchionian granulations. (05 Mar 2000) |
| pacchionian | Attributed to or described by Pacchioni. (05 Mar 2000) |
| pacchionian bodies | Tufted prolongations of pia-arachnoid, composed of numerous arachnoid villi that penetrate dural venous sinuses and effect transfer of cerebrospinal fluid to the venous system. at advanced age these are more numerous and tend to calcify. Synonym: granulationes arachnoideales, arachnoidal granulations, pacchionian bodies, pacchionian corpuscles, pacchionian glands, pacchionian granulations. (05 Mar 2000) |
| pacchionian corpuscles | Tufted prolongations of pia-arachnoid, composed of numerous arachnoid villi that penetrate dural venous sinuses and effect transfer of cerebrospinal fluid to the venous system. at advanced age these are more numerous and tend to calcify. Synonym: granulationes arachnoideales, arachnoidal granulations, pacchionian bodies, pacchionian corpuscles, pacchionian glands, pacchionian granulations. (05 Mar 2000) |
| pacchionian depressions | Pits on the inner surface of the skull, along the course of the superior sagittal sinus, in which are lodged the arachnoidal granulations. Synonym: foveolae granulares, pacchionian depressions. (05 Mar 2000) |
| pacchionian glands | Synonym: arachnoid granulations. (05 Mar 2000) |
| pacchionian granulations | Tufted prolongations of pia-arachnoid, composed of numerous arachnoid villi that penetrate dural venous sinuses and effect transfer of cerebrospinal fluid to the venous system. at advanced age these are more numerous and tend to calcify. Synonym: granulationes arachnoideales, arachnoidal granulations, pacchionian bodies, pacchionian corpuscles, pacchionian glands, pacchionian granulations. (05 Mar 2000) |
| pace | 1. A single movement from one foot to the other in walking; a step. 2. The length of a step in walking or marching, reckoned from the heel of one foot to the heel of the other; used as a unit in measuring distances; as, he advanced fifty paces. Ordinarily the pace is estimated at two and one half linear feet; but in measuring distances be stepping, the pace is extended to three feet (one yard) or to three and three tenths feet (one fifth of a rod). The regulation marching pace in the English and United States armies is thirty inches for quick time, and thirty-six inches for double time. The Roman pace (passus) was from the heel of one foot to the heel of the same foot when it next touched the ground, five Roman feet. 3. Manner of stepping or moving; gait; walk; as, the walk, trot, canter, gallop, and amble are paces of the horse; a swaggering pace; a quick pace. "To-morrow, and to-morrow, and to-morrow, Creeps in this petty pace from day to day." (Shak) "In the military schools of riding a variety of paces are taught." (Walsh) 4. A slow gait; a footpace. 5. Specifically, a kind of fast amble; a rack. 6. Any single movement, step, or procedure. "The first pace necessary for his majesty to make is to fall into confidence with Spain." (Sir W. Temple) 7. A broad step or platform; any part of a floor slightly raised above the rest, as around an altar, or at the upper end of a hall. 8. A device in a loom, to maintain tension on the warp in pacing the web. Geometrical pace, the space from heel to heel between the spot where one foot is set down and that where the same foot is again set down, loosely estimated at five feet, or by some at four feet and two fifths. See Roman pace in the Note under def. 2. To keep, or hold, pace with, to keep up with; to go as fast as. "In intellect and attainments he kept pace with his age." Origin: OE. Pas, F. Pas, from L. Passus a step, pace, orig, a stretching out of the feet in walking; cf. Pandere, passum, to spread, stretch; perh. Akin to E. Patent. Cf. Pas, Pass. Source: Websters Dictionary (01 Mar 1998) |