| plano | <microscopy> In optics, an optical surface which has been made substantially flat, the degree of flatness depending upon the performance required. A plano-convex lens is a positive lens with one surface flat and the other convex. In the dictionary, plano is given only as a combining form, but in practical optics it is often used alone to denote any particularly flat surface-- that has been worked flat. See: optical flat. Origin: L. Planus. (04 Mar 1998) |
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| planoblast | <zoology> Any free-swimming gonophore of a hydroid; a hydroid medusa. Origin: Gr. To wander. Source: Websters Dictionary (01 Mar 1998) |
| planocellular | Relating to or composed of flat cells. Origin: L. Planus, flat, + cellular (05 Mar 2000) |
| planoconcave | <optics> Flat on one side and concave on the other, usually denoting a lens of that shape. Source: Websters Dictionary (21 Jun 2000) |
| planoconvex | <optics> Flat on one side and convex on the other, usually denoting a lens of that shape. (21 Jun 2000) |
| planography | <procedure, radiology> The recording of internal body images at a predetermined plane by means of the tomograph, also called body section roentgenography. Origin: Gr. Graphein = to write (18 Nov 1997) |
| planomania | <psychiatry> The morbid impulse to leave home and discard social restraints. Origin: G. Planos, wandering, + mania, frenzy (05 Mar 2000) |
| planometry | <mechanics> The art or process of producing or gauging a plane surface. Source: Websters Dictionary (01 Mar 1998) |
| planorbis | <marine biology> Any fresh water air-breathing mollusk belonging to Planorbis and other allied genera, having shells of a discoidal form. Origin: NL, fr. L. Planus flat + orbis a circle. (19 Mar 1998) |
| planoscopic eyepiece | <microscopy> An American Optical Company (Reichert) eyepiece designed to flatten the field of achromatic objectives. (05 Aug 1998) |
| planotopokinesia | Loss of orientation in space. Origin: G. Planos, wandering, + topos, place, + kinesis, motion (05 Mar 2000) |
| planovalgus | A condition in which the longitudinal arch of the foot is flattened and everted. Origin: plano-+ L. Valgus, turned outward (05 Mar 2000) |
| plant | 1. To put in the ground and cover, as seed for growth; as, to plant maize. 2. To set in the ground for growth, as a young tree, or a vegetable with roots. "Thou shalt not plant thee a grove of any trees." (Deut. Xvi. 21) 3. To furnish, or fit out, with plants; as, to plant a garden, an orchard, or a forest. 4. To engender; to generate; to set the germ of. "It engenders choler, planteth anger." (Shak) 5. To furnish with a fixed and organised population; to settle; to establish; as, to plant a colony. "Planting of countries like planting of woods." (Bacon) 6. To introduce and establish the principles or seeds of; as, to plant Christianity among the heathen. 7. To set firmly; to fix; to set and direct, or point; as, to plant cannon against a fort; to plant a standard in any place; to plant one's feet on solid ground; to plant one's fist in another's face. 8. To set up; to install; to instate. "We will plant some other in the throne." (Shak) Origin: AS. Plantian, L. Plantare. See Plant. To perform the act of planting. "I have planted; Apollos watered." (1 Cor. Iii. 6) 1. A vegetable; an organised living being, generally without feeling and voluntary motion, and having, when complete, a root, stem, and leaves, though consisting sometimes only of a single leafy expansion, or a series of cellules, or even a single cellule. Plants are divided by their structure and methods of reproduction into two series, phaenogamous or flowering plants, which have true flowers and seeds, and cryptogamous or flowerless plants, which have no flowers, and reproduce by minute one-celled spores. In both series are minute and simple forms and others of great size and complexity. As to their mode of nutrition, plants may be considered as self-supporting and dependent. Self-supporting plants always contain chlorophyll, and subsist on air and moisture and the matter dissolved in moisture, and as a general rule they excrete oxygen, and use the carbonic acid to combine with water and form the material for their tissues. Dependent plants comprise all fungi and many flowering plants of a parasitic or saprophytic nature. As a rule, they have no chlorophyll, and subsist mainly or wholly on matter already organised, thus utilizing carbon compounds already existing, and not excreting oxygen. But there are plants which are partly dependent and partly self-supporting. The movements of climbing plants, of some insectivorous plants, of leaves, stamens, or pistils in certain plants, and the ciliary motion of zoospores, etc, may be considered a kind of voluntary motion. 2. A bush, or young tree; a sapling; hence, a stick or staff. "A plant of stubborn oak." 3. The sole of the foot. "Knotty legs and plants of clay." 4. The whole machinery and apparatus employed in carrying on a trade or mechanical business; also, sometimes including real estate, and whatever represents investment of capital in the means of carrying on a business, but not including material worked upon or finished products; as, the plant of a foundry, a mill, or a railroad. 5. A plan; an artifice; a swindle; a trick. "It was n't a bad plant, that of mine, on Fikey." (Dickens) 6. <zoology> An oyster which has been bedded, in distinction from one of natural growth. A young oyster suitable for transplanting. Plant bug, any small hemipterous insect which infests plants, especially those of the families Aphidae and Psyllidae; an aphid. Origin: AS. Plante, L. Planta. Source: Websters Dictionary (01 Mar 1998) |
| plant antitoxin | Antitoxin specific for a phytotoxin. (05 Mar 2000) |
| plant association | A grouping of plant species, or a plant community, that recurs across the landscape. Plant associations are used as indicators of environmental conditions such as temperature, moisture, light, etc. (05 Dec 1998) |
Synonyms : Calcium-Transporting ATPases, Plasma Membrane, PMCA Calcium-Transporting ATPases, PMCA1 Calcium-Transporting ATPase, PMCA2 Calcium-Transporting ATPase, PMCA3 Calcium-Transporting ATPase, PMCA4 Calcium-Transporting ATPase, Plasma Membrane Calcium ATPase
Synonyms : Plasma Membrane Neurotransmitter Transporter Proteins, Plasma Membrane Neurotransmitter Transporters, Sodium Chloride-Dependent Neurotransmitter Symporters, Sodium-Neurotransmitter Symporters, Sodium Chloride Dependent Neurotransmitter Symporters
Synonyms : Expanders, Blood, Expanders, Plasma Volume, Substitutes, Plasma, Volume Expanders, Plasma
Synonyms : Blood Plasma Volumes, Plasma Volumes, Volume, Blood Plasma, Volume, Plasma, Volumes, Blood Plasma, Volumes, Plasma
Synonyms : Plasmocytoma, Plasma Cell Tumors, Plasmacytomas, Plasmocytomas, Tumor, Plasma Cell, Tumors, Plasma Cell
| plasma cell |
a cell that develops from a B lymphocyte in reaction to a specific antigen; found in bone marrow and sometimes in the blood
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| platelet |
tiny bits of protoplasm found in vertebrate blood; essential for blood clotting
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| planaria |
planarian: free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
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| plasma membrane |
cell membrane: a thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium or potassium or calcium) in and out of the cell; "all cells have a cell membrane"
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| plateletpheresis |
platelets are separated from whole blood and the rest is returned to the donor
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| PLA | a basic knitting stitch |
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| PLA | popular Australian game bird |
| PLA | small Australian bird related to the button quail |
| PLA | a weave in which the filling and warp threads intertwine alternately producing a checkerboard effect |
| PLA | (of cloth) made in plain weave |
| PLA | a liturgical chant of the Roman Catholic Church |
| PLA | a detective who wears civilian clothes on duty |
| PLA | in a simple manner |
| PLA | unmistakably |
| PLA | an appearance that is not attractive or beautiful |
| PLA | the appearance of being plain and unpretentious |
| PLA | clarity as a consequence of being perspicuous |
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