| ALECITHAL | • alecithal adj. (Biology, of an ovum) Tending to segment uniformly, and having little or no yolk embedded in the protoplasm. • ALECITHAL adj. of an ovum, having little or no yolk. |
| AZIMUTHAL | • azimuthal adj. Of or pertaining to the azimuth; in a horizontal circle. • azimuthal adj. (Cartography) Describing a map projection which preserves direction for all points relative to a selected… • azimuthal n. (Cartography) An azimuthal projection. |
| BETROTHAL | • betrothal n. The act of betrothing. • betrothal n. The fact of being betrothed; a mutual promise, engagement, or contract for a future marriage between two people. • BETROTHAL n. an engagement to marry. |
| BISMUTHAL | • bismuthal adj. Containing bismuth. • BISMUTHAL adj. of or like bismuth. |
| LETHALITY | • lethality n. The fact of something being lethal; the ability of something to kill. • lethality n. The degree of lethal (mortal) danger that something (usually a disease or a weapon) presents; the magnitude… • LETHALITY n. the quality of being lethal. |
| NONLETHAL | • nonlethal adj. Alternative spelling of non-lethal. • nonlethal n. Alternative spelling of non-lethal. • non-lethal adj. Not capable of causing death. |
| PHTHALATE | • phthalate n. (Organic chemistry) Any salt or ester of a phthalic acid. • PHTHALATE n. a salt of phthalic acid. |
| PHTHALEIN | • phthalein n. (Organic chemistry) any of a range of lactones formed by the reaction of phenols with phthalic anhydride. • PHTHALEIN n. any one of a very important class of dye-yielding materials formed by the union of phenols with phthalic anhydride. |
| PHTHALINS | • phthalins n. Plural of phthalin. • PHTHALIN n. a colourless crystalline compound obtained by reducing a phthalein. |
| PROTHALLI | • prothalli n. Plural of prothallus. • PROTHALLUS n. the free-living gametophyte of a fern or other vascular cryptogam, also PROTHALLIUM. |
| SUBLETHAL | • sublethal adj. Less than lethal. • SUBLETHAL adj. not quite fatal. |
| THALASSIC | • thalassic adj. Of or relating to seas and oceans. • thalassic adj. Pelagic. • THALASSIC adj. marine; of the seas, esp. those which are small or inland. |
| THALLINES | • thallines n. Plural of thalline. • THALLINE n. a chemical compound used for medicinal purposes. |
| THALLIOUS | • thallious adj. (Chemistry) Alternative form of thallous. • THALLIOUS adj. containing thallium. |
| THALLIUMS | • thalliums n. Plural of thallium. • THALLIUM n. a rare bluish-white metallic chemical element. |
| THALLUSES | • thalluses n. Plural of thallus. • THALLUS n. (Greek) a plant body not differentiated into leaf, stem and root. |