Poa

Definitions

  • WordNet 3.6
    • n Poa chiefly perennial grasses of cool temperate regions
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Webster's Revised Unabridged Dictionary
    • n Poa (Bot) A genus of grasses, including a great number of species, as the kinds called meadow grass Kentucky blue grass June grass, and spear grasswhich see).
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Century Dictionary and Cyclopedia
    • n poa A genus of grasses of the tribe Festuceæ and subtribe Eufestuceæ, characterized by the commonly two-to six-flowered spikelets in a lax panicle, the smooth grain free from the palets, and the keeled and obtuse awnless flowering glume with five nerves converging at the apex. There are 100, or according to some over 200, species, widely dispersed, few in the tropics, most abundant in north temperate regions. They are known in general as meadow-grass or spear-grass. Some are low annuals, as P. annua, the low spear-grass, abundant by American roadsides and paths in parks, and blooming in he south from midwinter onward. The other American species are perennials, with tufted stems, often tall, and soft leaves, flat or less often convolute. The genus contains several valuable hay- and pasture-grasses, of which the most important is P. pratensis, the Kentucky blue-grass, june-grass, etc. (See blue-grass and meadowgrass.) P. amabilis is cultivated under the name love-grass, P. trivi-alis as bird-grass, etc., and P. cæpitosa as Australian grass. For otherspecies,see bunch-grass,daggers (under dagger6)fowl-grass (under fowl), June-grass, silver grass, teff, and wire-grass.
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Chambers's Twentieth Century Dictionary
    • n Poa a genus of grasses
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Etymology

Webster's Revised Unabridged Dictionary
NL., fr. Gr. grass
Chambers's Twentieth Century Dictionary
Gr. poa, grass.

Usage

In literature:

Among them were a poa, and the Chloris truncata, and Stipa setacea of Mr. Brown.
"Three Expeditions into the Interior of Eastern Australia, Vol 1 (of 2)" by Thomas Mitchell
A Poa near P. australis, R. Br.
"Three Expeditions into the Interior of Eastern Australia, Vol 2 (of 2)" by Thomas Mitchell
Noticed Apluda, a Phyllanthus, Cacalia, Poa, etc.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Festuca rubra L. Poa cenisea ALL.
"The Voyage of the Vega round Asia and Europe, Volume I and Volume II" by A.E. Nordenskieold
Rice grows wild, and several kinds of Poa grass are used as food by the natives.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2" by Various
Well, this yak, or syrlak, or grunting ox, or poa-eater, whatever we may call him, is a very peculiar and useful animal.
"The Plant Hunters" by Mayne Reid
Poa compressa, Flat-stemmed poa, wire grass.
"Seeds of Michigan Weeds" by W. J. (William James) Beal
Type locality: Rio Poas de Aserri (a few miles south of San Jose), Costa Rica.
"A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America)" by John Wellman
Poa nemoralis Wood meadow-grass.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3" by Various
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In news:

Texas blue grass ( Poa arachnifera ).
" POA alive and well".
Cahill POA Board of Directors.
CROSSVILLE — I have heard talk about Tansi POA (LTPOA) going bankrupt.
Tansi POA files suit over sewer system loan.
Both of these documents: power of attorney (POA) and will give you financial peace of mind.
Lenders need not accept POA, but most do.
Poa annua Control in Dormant Bermudagrass.
Former management group worker charged with stealing from St James POA.
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In science:

Many games, however, have a high Price of Anarchy (PoA), where PoA means the worst case ratio between the social cost in an equilibrium and that of the global optimal configur ation (see Section 2.1 for its formal definition).
Near Optimality in Covering and Packing Games by Exposing Global Information
The following special case illustrates that PoA is Ω(n) in our set cover game.
Near Optimality in Covering and Packing Games by Exposing Global Information
The more general problem of dynamics for games with high PoA is addressed in [1, 2], in which authors propose three models of distributed and semi-selfish social behavior in a general repeated game setting.
Near Optimality in Covering and Packing Games by Exposing Global Information
Since these games often have a high Price of Anarchy [10, 13], the results do not translate to global performance guarantees. A number of approaches have been explored to circumvent such bad PoA results.
Near Optimality in Covering and Packing Games by Exposing Global Information
The star graph example from the introduction reveals that PoA in the covering game can be very large.
Near Optimality in Covering and Packing Games by Exposing Global Information
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