| BOROHYDRIDES | • borohydrides n. Plural of borohydride. • BOROHYDRIDE n. a compound of boron and hydrogen, used as a reducing agent.
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| DEHYDRATIONS | • dehydrations n. Plural of dehydration. • DEHYDRATION n. loss or withdrawal of moisture.
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| DENDROGLYPHS | • dendroglyphs n. Plural of dendroglyph. • DENDROGLYPH n. an ancient carving on a tree.
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| FOREHANDEDLY | • forehandedly adv. Prudently, with thrift and foresight. • forehandedly adv. Ahead of time, in advance.
 • fore-handedly adv. Alternative form of forehandedly.
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| FORMALDEHYDE | • formaldehyde n. (Organic chemistry) The simplest aldehyde, HCHO, a colourless gas that has many industrial applications;… • FORMALDEHYDE n. a formic aldehyde, formalin.
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| HYDROCODONES | • hydrocodones n. Plural of hydrocodone. • HYDROCODONE n. a semisynthetic opioid drug derived from codeine and thebaine.
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| HYDROCRACKED | • hydrocracked v. Simple past tense and past participle of hydrocrack. • hydrocracked adj. That has been subjected to hydrocracking.
 • HYDROCRACK v. to crack hydrocarbons in the presence of hydrogen.
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| HYDROGENATED | • hydrogenated v. Simple past tense and past participle of hydrogenate. • hydrogenated adj. That has been treated, or reacted with hydrogen; especially describing a saturated fat so obtained from…
 • HYDROGENATE v. to combine or treat with hydrogen.
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| HYDROGENISED | • hydrogenised v. Simple past tense and past participle of hydrogenise. • HYDROGENISE v. to hydrogenate, also HYDROGENIZE.
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| HYDROGENIZED | • hydrogenized v. Simple past tense and past participle of hydrogenize. • HYDROGENIZE v. to hydrogenate, also HYDROGENISE.
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| HYDROMEDUSAE | • hydromedusae n. Plural of hydromedusa. • HYDROMEDUSA n. a hydrozoan in its medusoid stage, also HYDROMEDUSAN, HYDROMEDUSOID.
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| HYDROMEDUSAN | • hydromedusan adj. (Zoology) Relating to the hydromedusas. • HYDROMEDUSAN n. a hydromedusa, also HYDROMEDUSA, HYDROMEDUSOID.
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| HYDROMEDUSAS | • hydromedusas n. Plural of hydromedusa. • HYDROMEDUSA n. a hydrozoan in its medusoid stage, also HYDROMEDUSAN, HYDROMEDUSOID.
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| HYDROXYLATED | • hydroxylated v. Simple past tense and past participle of hydroxylate. • hydroxylated adj. (Organic chemistry) That has been modified by hydroxylation.
 • HYDROXYLATE v. to introduce hydroxyl into.
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| MONOHYDRATED | • monohydrated adj. Hydrated with a single molecule of water. • MONOHYDRATED adj. like a monohydrate.
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| SOREHEADEDLY | • SOREHEADED adv. irritable, grumpy. | 
| UNHYDROLYSED | • unhydrolysed adj. Alternative spelling of unhydrolyzed. • UNHYDROLYSED adj. not hydrolysed, also UNHYDROLYZED.
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| UNHYDROLYZED | • unhydrolyzed adj. Not hydrolyzed. • UNHYDROLYZED adj. not hydrolyzed, also UNHYDROLYSED.
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