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refract
refracting telescope
refraction
refractive
refractive index
refractometer
refractor
refractory
refractory period
refrain (1)
refrain (2)
refrangible
refresco
refresh
refresh rate
refreshen
refresher
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refractory period
re·frac·to·ry pe·ri·od (plural re·frac·to·ry pe·ri·ods)


noun 
Definition:
 
nonresponsive time for cell: the time after receiving a stimulus during which a nerve or muscle cell cannot respond to further stimuli
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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