| 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. |
| FEATHERLIGHT | • featherlight adj. Alternative form of feather-light. • feather-light adj. Extremely light; light as a feather. • FEATHERLIGHT adj. extremely light. |
| HATCHABILITY | • hatchability n. (Of an egg) The state of being likely to hatch; a measure of that ability. • hatchability n. (Of a bird etc) The state of being able to produce hatchable eggs; a measure of that ability. • HATCHABILITY n. the capacity for being hatched. |
| HYLOPATHISTS | • hylopathists n. Plural of hylopathist. • HYLOPATHIST n. a believer in the capability of matter to affect spirit. |
| 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. |
| ICHTHYOLATRY | • ichthyolatry n. The worship of fish, or of fish-shaped idols. • ICHTHYOLATRY n. the worship of 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. |
| OPHTHALMISTS | • ophthalmists n. Plural of ophthalmist. • OPHTHALMIST n. an ophthalmologist. |
| OPHTHALMITIS | • ophthalmitis n. Severe conjunctivitis. • OPHTHALMITIS n. ophthalmia. |
| 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. |
| THALLOPHYTIC | • thallophytic adj. Relating to thallophytes. • THALLOPHYTIC adj. of or like a thallophyte. |
| THIOSULPHATE | • thiosulphate n. A salt of thiosulphuric acid. • THIOSULPHATE n. any salt of thiosulphuric acid, also THIOSULFATE. |
| TRIPHTHONGAL | • triphthongal adj. Pertaining to a triphthong. • TRIPHTHONGAL adj. relating to triphthong. |
| UNHEALTHIEST | • unhealthiest adj. Superlative form of unhealthy: most unhealthy. • UNHEALTHY adj. not healthy. |
| WHITLEATHERS | • WHITLEATHER n. leather dressed with alum. |