Polyvalent vaccine
polyvalent vaccine n.
A vaccine prepared from cultures of two or more strains of the same species of microorganism or virus. Also called multivalent vaccine.
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polyphrasia pol·y·phra·si·a (pŏl’ĭ-frā’zē-ə, -zhə) n. Extreme talkativeness.
- Polyphosphoric acid
/ˌpɒlɪfɒsˈfɒrɪk/ noun 1. any one of a series of oxyacids of phosphorus with the general formula Hn+2PnO3n+1. The first member is pyrophosphoric acid (n = 2) and the series includes the highly polymeric metaphosphoric acid. The higher acids exist in an equilibrium mixture 2. a glassy or liquid mixture of orthophosphoric and polyphosphoric acids: used […]
- Polyphony
[puh-lif-uh-nee] /pəˈlɪf ə ni/ noun 1. Music. polyphonic composition; counterpoint. 2. Phonetics. representation of different sounds by the same letter or symbol. /pəˈlɪfənɪ/ noun (pl) -nies 1. polyphonic style of composition or a piece of music utilizing it 2. the use of polyphones in a writing system n. 1828, “multiplicity of sounds,” from Greek polyphonia […]
- Polyphonous
[puh-lif-uh-nee] /pəˈlɪf ə ni/ noun 1. Music. polyphonic composition; counterpoint. 2. Phonetics. representation of different sounds by the same letter or symbol. /pəˈlɪfənɪ/ noun (pl) -nies 1. polyphonic style of composition or a piece of music utilizing it 2. the use of polyphones in a writing system n. 1828, “multiplicity of sounds,” from Greek polyphonia […]
- Polyvinyl-butyral
noun, Chemistry. 1. a white, water-insoluble, polyvinyl acetal made with butyraldehyde, used chiefly as an interlayer in the manufacture of safety glass.