pith ray
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Related to pith ray: wood ray
pith ray
[′pith ‚rā] (botany)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
medullary ray, pith ray

medullary rays
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.