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Possible definitions for piprine
citrine
Transparent, coarse-grained variety of the silica mineral quartz. Citrine is a semiprecious gem that is valued for its yellow to brownish color and its resemblance to the rarer topaz. Natural citrine is rarer than amethyst or smoky quartz, both of which are often heated to change their natural color to that of citrine. Citrine is often marketed under various names that confuse it with topaz to inflate its price; it may be distinguished from topaz by its inferior hardness. It occurs mainly in Brazil, Uruguay, the Ural Mtns., Scotland, and N. Carolina.
Pielinen
Lake, SE Finland, near the border with Russia. It is 56 mi (90 km) long and has an area of 422 sq mi (1,093 sq km). It has many islands and is drained southward into Lake Saimaa by the Pielis River. It is surrounded by dense forests, especially on its W shore. The shore is capped by Koli Hill, the center of a winter sports area.
purine
Any of a class of heterocyclic compounds with a two-ring structure composed of carbon and nitrogen atoms. The simplest member, purine itself (C5H4N4), is not common, but its derivatives with the structure are. Examples are uric acid, caffeine, and two of the nucleotides in nucleic acids, guanine and adenine.
Top words beginning with P: planetless, poppled, photoinhibition, pithiest, pithecanthropoid, pondus, plummer, pseudothalidomide, perilabyrinth, periled, physiopathologies, puerperous, prisonlike, postcritical, partitioned, prevenience, prestimulus, pitapat, pellaea, pccf
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