1. 
   Peak Annual Flow
   The largest discharge produced by a stream during a one year period.
   Found op http://www.physicalgeography.net/physgeoglos/p.html
   
   
2. 
   Peak expiratory flow
   Peak expiratory flow: Abbreviated PEF. The maximum airflow during a forced expiration beginning with the lungs fully inflated. The PEF is reduced in proportion to the severity of the airway obstruction, as in asthma and COPD (chronic obstructive pulmonary disease).
   Found op http://www.medterms.com/script/main/art.html?articlekey=24656
   
   
3. 
   peak expiratory flow
   The maximum flow at the outset of forced expiration, which is reduced in proportion to the severity of airway obstruction, as in asthma. ... (05 Mar 2000) ...
   Found op http://www.mondofacto.com/facts/dictionary?peak+expiratory+flow
   
   
4. 
   peak expiratory flow
   Type: Term Definitions: 1. the maximum flow at the outset of forced expiration, which is reduced in proportion to the severity of airway obstruction, as in asthma.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=34076
   
   
5. 
   Peak expiratory flow
   The peak expiratory flow (PEF), also called peak expiratory flow rate (PEFR) is a person`s maximum speed of expiration, as measured with a peak flow meter, a small, hand-held device used to monitor a person`s ability to breathe out air. It measures the airflow through the bronchi and thus the degre...
   Found op http://en.wikipedia.org/wiki/Peak_expiratory_flow
   
   
6. 
   peak flow
   <chest medicine, physiology> The maximum flow rate of air breathed out during forced expiration. ... (15 Nov 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?peak+flow
   
   
7. 
   peak flow
   the maximum amount of air breathed out; the power needed to produce this amount.
   Found op http://users.ugent.be/~rvdstich/eugloss/DIC/dictio65.html
   
   
8. 
   Peak flow
   Refers to a specific period of time when the discharge of a stream or river is at its highest point.
   Found op http://www.streamnet.org/glossary.html
   
   

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