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rawinsonde
rax
ray (1)
ray (2)
ray (3)
Ray-Bans
ray flower
ray gun
ray initial
Rayleigh scattering
rayless
Raymond Terrace
Raynaud’s disease
Raynaud’s phenomenon
rayon
raze
razoo
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ray initial
ray in·i·tial (plural ray in·i·tials)


noun 
Definition:
 
plant cell in stem: a cell in the tissue-forming layer cambium within a plant stem that gives rise to radial strands of pith
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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