Pna
personal needs allowance
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- Pnas
polynuclear aromatic hydrocarbons
- 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-.