A substance which exudes spontaneously from the inner bark of the elm and some other trees; spec. the final stage of this as a distinct chemical…
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| 单词 | θ69803 |
| 释义 | the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > ulmic acid (2) ulmin1817 A substance which exudes spontaneously from the inner bark of the elm and some other trees; spec. the final stage of this as a distinct chemical… ulmic acid1843 ulmic acid. = ulmin, n. 2. |
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