Términos
Resultado de búsqueda
polygraph
Jerarquía
polylactic acid
Definición
Thermoplastic polyester manufactured from corn starch or other renewable resources. First developed for use as a synthetic fiber during World War 2 when organic materials were in short supply. In conservation used as a protective covering for stone materials exposed outdoors.
Jerarquía
polymerase chain reaction
Definición
In molecular biology a technique for rapidly replicating a sequence of genomic DNA by a simple enzyme reaction. The process is used to produce a sufficient quantity of DNA for detailed analysis and manipulation.
Jerarquía
Polynesian dog (extinct dog breed)
Definición
Breed of dog, now extinct, that was introduced to New Zealand by Maori during their migrations from East Polynesia in the late 13th century.
Jerarquía
Polynesian language (language)
Jerarquía
polyolefin
Definición
Refers to any polymerized olefin. Polypropylene and polyethylene are the two most common polyolefins.
Jerarquía
polypod vessels
Definición
Vessels supported by two, three or four small legs, often refers particularly to Middle American archaeological objects and also the European Beaker culture of the Neolithic and Early Bronze Age.
Jerarquía
Polypodiopsida (class)
Definición
Class containing 4 orders and around 9,000 species of ferns.
Jerarquía
polysaccharides
Definición
Any member of a class of carbohydrates that contain 9 or more monosaccharides linked by glycosidic bonds. Starch, agar, cellulose are polysaccharides.
Jerarquía
polytechnics (institutions)
Definición
Educational institutions distinguished from "universities" by traditionally providing training for technicians in business, industry, and commerce for an immediate local area, having fewer residence facilities, and offering more part-time classes. For educational institutions emphasizing training in agriculture or specific trades, use "vocational schools."
Jerarquía
polytetrafluoroethylene
Definición
Strong, tough, waxy, nonflammable synthetic resin produced by the polymerization of tetrafluoroethylene; has numerous applications. It is distinguished by its slippery surface, high melting point, and resistance to attack by almost all chemicals.
Jerarquía
polyvinyl formal
Definición
A colorless, flexible thermoplastic resin produced by the condensation of polyvinyl alcohol with formaldehyde that is used as a structural adhesive. In conservation, plasticized polyvinyl formal film has been used to fill losses in ancient textiles.
Jerarquía
polyvinyl siloxane
Definición
A hydrophilic silicone elastomer introduced in the 1970s. It is used in dentistry for dental and gingival impressions.
Jerarquía
Pomacentridae (family)
Definición
A family of perciform fish with around 385 species in about 29 genera comprised of damselfish and clownfish. Usually saltwater dwelling, with some inhabiting brackish or freshwater environments.
Jerarquía
pomander
Definición
Recipiente pequeño perforado y generalmente globular, con forma de manzana o compuesto de secciones que se encajan, que sirve para contener especias aromáticas o perfumes. Originalmente se cargaba con el fin de prevenir infecciones.
Términos Alternativos
- poma
- pomanders
- pomo (perfumes)
Jerarquía
pomegranate (fruit)
Definición
Fruit of Punica granatum, a bush or small tree of Asia. The fruit is the size of a large orange, obscurely six-sided, with a smooth, leathery skin that ranges from brownish yellow to red; within, it is divided into several chambers containing many thin, transparent vesicles of reddish, juicy pulp, each surrounding an angular, elongated seed. The fruit is eaten fresh, and the juice is the source of grenadine syrup, used in flavorings and liqueurs. Throughout the East, the pomegranate has since earliest times occupied a position of importance alongside the grape and the fig.
Jerarquía
pomelo
Definición
Cítricos grandes con la piel amarilla y pulpa jugosa, amarga.
Términos Alternativos
- pomelos (frutas)
- toronja
Jerarquía
pomo (florón)
Definición
Florones redondeados.
Términos Alternativos
- bola de piedra
- pomos (florón)
