As part of a species name, means “black or very dark green.” For example, the Austrian pine, Pinus nigra, has very dark green needles.
nigr-
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 | nigrosine |
| denigrate |
| Negro (person) |
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 | Gardener's Dictionary. Taylor's Dictionary for Gardeners, by Frances Tenenbaum. Copyright © 1997 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. Read more |
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