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词汇 ledi-
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OED

ledi-|liːdɪ|combining form of mod.L. Lēdum (see ledum); used in chemical terms: lediˈtannic (acid), lediˈxanthin (see quots.).1865Watts Dict. Chem. III. 567 Leditannic acid... A variety of tannic acid, obtained from the leaves of the marsh wild rosemary (Ledum palustre).Ibid., Ledixanthin, a yellow or red pulverulent substance, produced by boiling leditannic acid with sulphuric or hydrochloric acid.
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