polynuclear aromatic hydrocarbons


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  • Pnc

    1. premature nodal contraction 2. prenatal care

  • Pndb

    abbreviation 1. perceived noise decibel

  • Pnea

    1. a combining form meaning “breath, respiration,” used in the formation of compound words that denote a kind of breathing or condition of the respiratory system, as specified by the initial element: dyspnea; hyperpnea. -pnea suff. Breath; respiration: dyspnea.

  • Pneum-

    pneum- pref. Variant of pneumo-.

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