Countable Nouns Starting with HYDR and Containing UM

Browse 7 valid English countable nouns starting with HYDR and containing UM, from Hydronium, Hydropneumothorax, Hydropericardium, Hydroxonium, Hydroflumethiazide, Hydropneumopericardium and Hydropneumatosis to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with HYDRO7 words
hydronium
hydropneumothorax
hydropericardium
hydroxonium
hydroflumethiazide
hydropneumopericardium
hydropneumatosis

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