| CHALCANTHITE | • chalcanthite n. (Mineralogy) A mineral form of copper sulfate, CuSO4. • CHALCANTHITE n. native hydrated copper sulphate, a blue triclinic mineral usually occurring as tabular crystals. |
| CHLOANTHITES | • CHLOANTHITE n. a nickel-rich variety of skutterudite, aka white nickel. |
| EIGHTEENTHLY | • eighteenthly adv. In the eighteenth place; eighteenth in a row. • EIGHTEENTH adv. number eighteen in sequence. |
| FEATHERLIGHT | • featherlight adj. Alternative form of feather-light. • feather-light adj. Extremely light; light as a feather. • FEATHERLIGHT adj. extremely light. |
| HYPOTHETICAL | • hypothetical adj. Based upon a hypothesis; conjectural. • hypothetical adj. (Philosophy) conditional; contingent upon some hypothesis/antecedent. • hypothetical n. A possible or hypothetical situation or proposition. |
| ICHTHYOLITES | • ichthyolites n. Plural of ichthyolite. • ICHTHYOLITE n. a fossil fish. |
| LIGHTHEARTED | • lighthearted adj. Joyful, glad, taking pleasure in being alive; not depressed or sad. • lighthearted adj. Enjoyably lacking of seriousness, not grave. • light-hearted adj. Alternative spelling of lighthearted. |
| LIGHTWEIGHTS | • lightweights n. Plural of lightweight. • light-weights n. Plural of light-weight. • LIGHTWEIGHT n. a person of little account. |
| NIGHTCLOTHES | • nightclothes n. Clothing worn while sleeping in bed, such as pyjamas or a nightgown, and, when worn over nightclothes, a robe. • NIGHTCLOTHES n. clothes worn for bed. |
| TEREPHTHALIC | • terephthalic adj. (Organic chemistry) Pertaining to, or derived from terephthalic acid or its derivatives. • TEREPHTHALIC adj. derived from or containing terebic and phthalic acids, as in terephthalic acid. |
| THIOSULPHATE | • thiosulphate n. A salt of thiosulphuric acid. • THIOSULPHATE n. any salt of thiosulphuric acid, also THIOSULFATE. |
| THIRTEENTHLY | • thirteenthly adv. In the thirteenth place; thirteenth in a row. • THIRTEENTH adv. number thirteen in sequence. |
| TROCHELMINTH | • trochelminth n. (Zoology, obsolete) Any member of the Trochelminthes. • TROCHELMINTH n. any invertebrate of the former taxonomic group Trochelminthes, which included the rotifers and gastrotrichs. |
| UNHEALTHIEST | • unhealthiest adj. Superlative form of unhealthy: most unhealthy. • UNHEALTHY adj. not healthy. |
| WHITLEATHERS | • WHITLEATHER n. leather dressed with alum. |
| WITHHOLDMENT | • withholdment n. The act of withholding. • WITHHOLDMENT n. the act of withholding. |