| BEQUEATHAL | • bequeathal n. The act of bequeathing; bequeathment; bequest. • BEQUEATHAL n. the act of bequeathing. |
| BETROTHALS | • betrothals n. Plural of betrothal. • BETROTHAL n. an engagement to marry. |
| ENTHALPIES | • enthalpies n. Plural of enthalpy. • ENTHALPY n. the total heat content of a system. |
| HOMOTHALLY | • homothally n. Homothallism. • HOMOTHALLY n. the state of having only one type of mycelium, also HOMOTHALLISM. |
| NAPHTHALIC | • naphthalic adj. Of, pertaining to, yielding, or derived from naphthalene. • NAPHTHALIC adj. as in naphthalic acid, an acid derived from naphthalene. |
| NAPHTHALIN | • naphthalin n. Naphthalene. • NAPHTHALIN n. a white crystalline volatile solid with a characteristic penetrating odour, an aromatic hydrocarbon, also NAPHTHALINE. |
| OPHTHALMIA | • ophthalmia n. (Medicine) ophthalmitis. • OPHTHALMIA n. an inflammation of the membranes or coats of the eye or of the eyeball. |
| OPHTHALMIC | • ophthalmic adj. (Medicine) Of or pertaining to the eyes. • ophthalmic adj. Visionary, looking to the future. • OPHTHALMIC adj. pertaining to or connected with the eye. |
| PHTHALATES | • phthalates n. Plural of phthalate. • PHTHALATE n. a salt of phthalic acid. |
| PHTHALEINS | • phthaleins n. Plural of phthalein. • PHTHALEIN n. any one of a very important class of dye-yielding materials formed by the union of phenols with phthalic anhydride. |
| PROTHALLIA | • prothallia n. Plural of prothallium. • PROTHALLIUM n. the free-living gametophyte of a fern or other vascular cryptogam, also PROTHALLUS. |
| PROTHALLIC | • PROTHALLIC adj. relating to a prothallus, the growth following a germinating spore, for the purpose of sexual reproduction. |
| PROTHALLUS | • prothallus n. A prothallium. • PROTHALLUS n. the free-living gametophyte of a fern or other vascular cryptogam, also PROTHALLIUM. |
| SEMILETHAL | • semilethal adj. (Biology, genetics, of a trait) lethal to at least half of all affected organisms. • semilethal n. A semilethal trait. • SEMILETHAL n. a mutation that tends to be lethal but is not always. |
| THALASSIAN | • thalassian n. (Zoology, dated) Any sea tortoise. • THALASSIAN n. a type of sea turtle. |
| THALICTRUM | • thalictrum n. (Botany) Any plant of the genus Thalictrum; meadowrue. • Thalictrum prop.n. A taxonomic genus within the family Ranunculaceae – the meadow rues. • THALICTRUM n. a plant of the meadow-rue genus. |
| THALLIFORM | • thalliform adj. Of the form of a thallus. • THALLIFORM adj. shaped like a thallus, a plant body not differentiated into leaf, stem and root. |