[pahy-ruh-meth-uh-meen, -min] /ˌpaɪ rəˈmɛθ əˌmin, -mɪn/
a potent substance, C 1 2 H 1 3 ClN 4 , used against susceptible plasmodia in the prophylactic treatment of malaria and against Toxoplasma gondi in the treatment of toxoplasmosis.
pyrimethamine py·ri·meth·a·mine (pī’rə-měth’ə-mēn’, -mĭn)
A potent folic acid antagonist used as a prophylactic antimalarial agent against Plasmodium falciparum and in the treatment of toxoplasmosis.
[pahy-rim-i-deen, pi-, pir-uh-mi-deen, -din] /paɪˈrɪm ɪˌdin, pɪ-, ˈpɪr ə mɪˌdin, -dɪn/ noun, Biochemistry. 1. a heterocyclic compound, C 4 H 4 N 2 , that is the basis of several important biochemical substances. 2. one of several pyrimidine derivatives, especially the bases cytosine, thymine, and uracil, which are fundamental constituents of nucleic acids. /paɪˈrɪmɪˌdiːn/ noun […]
[pir-uh-fleg-uh-thon, -flej-] /ˌpɪr əˈflɛg əˌθɒn, -ˈflɛdʒ-/ noun, Classical Mythology. 1. (def 1).
[pahy-rahyt] /ˈpaɪ raɪt/ noun 1. a very common brass-yellow mineral, iron disulfide, FeS 2 , with a metallic luster, burned to sulfur dioxide in the manufacture of sulfuric acid: chemically similar to marcasite, but crystallizing in the isometric system. /ˈpaɪraɪt/ noun 1. a yellow mineral, found in igneous and metamorphic rocks and in veins. It […]
[pahy-rahy-teez, puh-, pahy-rahyts] /paɪˈraɪ tiz, pə-, ˈpaɪ raɪts/ noun, plural pyrites. Mineralogy. 1. . 2. . 3. any of various other metallic sulfides, as of copper or tin. [pahy-rahyt] /ˈpaɪ raɪt/ noun 1. a very common brass-yellow mineral, iron disulfide, FeS 2 , with a metallic luster, burned to sulfur dioxide in the manufacture of […]