| ASTHENOSPHERE | • asthenosphere n. (Geology) The zone of the Earth’s upper mantle, below the lithosphere. • ASTHENOSPHERE n. the upper layer of the earth's mantle, below the lithosphere, characterized by a relatively low resistance to plastic flow. |
| ELEUTHERARCHS | • ELEUTHERARCH n. the chief of the eleutheri, an invented secret society. |
| ETHOXYETHANES | • ethoxyethanes n. Plural of ethoxyethane. • ETHOXYETHANE n. a type of ether, aka diethyl ether, an isomer of butanol. |
| FEATHERHEADED | • featherheaded adj. Alternative form of feather-headed. • feather-headed adj. (Colloquial) giddy; frivolous; foolish. • FEATHERHEADED adj. foolish, empty-headed. |
| FEATHERWEIGHT | • featherweight n. A weight class in many combat sports; e.g. in professional boxing of a maximum of 126 pounds or 57.2 kilograms. • featherweight n. A sportsman who fights in this division. • featherweight n. The lightest weight that may be carried by a racehorse. |
| HEALTHINESSES | • healthinesses n. Plural of healthiness. • HEALTHINESS n. the state of being healthy. |
| HEATHENNESSES | • HEATHENNESS n. the state of being heathen. |
| HERESTHETICAL | • HERESTHETICAL adj. relating to heresthetics, a political theory that involves structuring the world so you can win. |
| HETEROTHERMAL | • heterothermal adj. Alternative form of heterothermic. • HETEROTHERMAL adj. taking the temperature of the surroundings. |
| HORSEFEATHERS | • horsefeathers interj. (Euphemistic) Indicates disbelief. • horsefeathers n. Plural of horsefeather (singular not used). • horsefeathers n. (Euphemistic) Nonsense; indicates disbelief. |
| HOTHEADEDNESS | • hotheadedness n. The state or characteristic of being hotheaded; the tendency to be easily infuriated or provoked. • hot-headedness n. Alternative spelling of hotheadedness. • HOTHEADED n. rash, impetuous. |
| HYPERESTHESIA | • hyperesthesia n. Unusual or pathological sensitivity of the skin or of a particular sense. • HYPERESTHESIA n. excessive sensitivity, also HYPERAESTHESIA. |
| PHENANTHRENES | • phenanthrenes n. Plural of phenanthrene. • PHENANTHRENE n. an aromatic hydrocarbon of coal tar. |
| TEREPHTHALATE | • terephthalate n. (Organic chemistry) Any salt or ester of terephthalic acid. • TEREPHTHALATE n. a salt or ester of terephthalic acid. |
| THERMESTHESIA | • thermesthesia n. The ability to feel heat. • THERMESTHESIA n. sensitivity to various degrees of heat and cold, also THERMAESTHESIA. |