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parathyroid
parathyroid gland
parathyroid hormone
parathyroidectomy
paratransit
paratrooper
paratyphoid fever
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paraxial
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paraxial
par·ax·i·al [ pə ráksee əl ]


adjective 
Definition:
 
close to optical axis: used to describe rays of light that are close to the axis of an optical system
[Mid-19th century. <para-1 + axis1, after axial]
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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