[pi-roh-li-deen, -din, -rol-i-] /pɪˈroʊ lɪˌdin, -dɪn, -ˈrɒl ɪ-/
a colorless, water-soluble, unpleasant smelling, poisonous liquid, C 4 H 9 N, from which proline and certain alkaloids are derived, prepared by reducing : used chiefly in organic synthesis.
an almost colourless liquid occurring in tobacco leaves and made commercially by hydrogenating pyrrole. It is a strongly alkaline heterocyclic base with molecules that contain a ring of four carbon atoms and one nitrogen atom. Formula: C4H9N
pyrrolidine pyr·rol·i·dine (pĭ-rŏl’ĭ-dēn’)
A nearly colorless liquid pyrrole derivative of pyrrole having an ammonialike odor; it is the basis of proline and hydroxyproline.
[pi-rohl, pir-ohl] /pɪˈroʊl, ˈpɪr oʊl/ noun, Chemistry. 1. a colorless, toxic, liquid, five-membered ring compound, C 4 H 5 N, that is a component of chlorophyll, hemin, and many other important naturally occurring substances. /ˈpɪrəʊl; pɪˈrəʊl/ noun 1. a colourless insoluble toxic liquid having a five-membered ring containing one nitrogen atom, found in many naturally […]
[pi-rof-i-tuh] /pɪˈrɒf ɪ tə/ noun, Biology. 1. a phylum in the kingdom Protista comprising the dinoflagellates and cryptomonads.
[pir-uh-fahyt] /ˈpɪr əˌfaɪt/ noun 1. any of various single-celled, biflagellated algae, of the phylum , especially the dinoflagellates.
[pahy-roo-veyt, pi-] /paɪˈru veɪt, pɪ-/ noun, Chemistry. 1. an ester or salt of . pyruvate py·ru·vate (pī-rōō’vāt, pĭ-) n. A salt or an ester of pyruvic acid. pyruvate (pī-r’vāt, pĭ-) A salt, ester, or ionized form of pyruvic acid, containing the group CH3COCOO.