phlob·a·phene
| \ ˈfläbəˌfēn \
plural -s
Definition of phlobaphene
1
: a reddish brown complex substance found in oak bark and also formed by heating quercitannin with dilute acids
2
: any of several substances that are similar to phlobaphene and are obtained especially from barks or from condensed tannins
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Merriam-Webster unabridged
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