| ELEUTHERODACTYL | • ELEUTHERODACTYL n. of birds, having the hind toe free. |
| HETERODACTYLOUS | • heterodactylous adj. (Zoology) Having the first and second toes turned backward, as in the trogons. • HETERODACTYLOUS adj. having the first and second toes turned backwards, as in trogons, and not the first and fourth as in parrots. |
| HYDROSTATICALLY | • hydrostatically adv. In a hydrostatic manner. • hydrostatically adv. With regard to hydrostatics. • HYDROSTATICAL adv. of or relating to fluids at rest or to the pressures they exert or transmit, also HYDROSTATIC. |
| HYDROXYLAPATITE | • hydroxylapatite n. Alternative spelling of hydroxyapatite. • HYDROXYLAPATITE n. a mineral of the apatite group that is rare in the ground but is the principal inorganic constituent of tooth enamel and bone. |
| HYPERSTIMULATED | • hyperstimulated v. Simple past tense and past participle of hyperstimulate. • HYPERSTIMULATE v. to stimulate excessively. |
| HYPERVENTILATED | • hyperventilated v. Simple past tense and past participle of hyperventilate. • HYPERVENTILATE v. to breathe rapidly and deeply. |
| LABYRINTHODONTS | • labyrinthodonts n. Plural of labyrinthodont. • LABYRINTHODONT n. an extinct amphibian, so called from a mazy pattern on a section of its teeth. |
| METHYLPHENIDATE | • methylphenidate n. (Medicine) A stimulant used to treat attention deficit hyperactivity disorder and narcolepsy, better… • METHYLPHENIDATE n. a stimulant used in treating attention deficit disorder. |
| NORTHEASTWARDLY | • northeastwardly adv. Towards the northeast. • NORTHEASTWARDLY adv. in a northeasterly direction. |
| NORTHWESTWARDLY | • northwestwardly adv. Towards the northwest. • NORTHWESTWARDLY adv. NORTHWESTWARD. |
| ORTHODONTICALLY | • orthodontically adv. By orthodontic means. • ORTHODONTIC adv. relating to orthodontics, the rectification of crookedness in the teeth. |
| POLYARTHRITIDES | • polyarthritides n. Plural of polyarthritis. • POLYARTHRITIS n. arthritis affecting several joints. |
| SOPHISTICATEDLY | • sophisticatedly adv. In a sophisticated manner. • SOPHISTICATED adv. SOPHISTICATE, to make artificial or worldly. |
| SOUTHWESTWARDLY | • southwestwardly adv. Toward the southwest. • SOUTHWESTWARDLY adv. in a southwesterly direction. |
| TENDERHEARTEDLY | • tenderheartedly adv. In a tenderhearted manner, with caring and compassion. • tender-heartedly adv. Alternative form of tenderheartedly. • TENDERHEARTED adv. easily moved to love, pity, or sorrow. |
| TETARTOHEDRALLY | • TETARTOHEDRAL adv. having one fourth the number of planes required by complete symmetry. |
| TETRAETHYLLEADS | • tetraethyl␣leads n. Plural of tetraethyl lead. • TETRAETHYLLEAD n. a colourless oily insoluble liquid formerly used in petrol to prevent knocking. |
| TETRAMETHYLLEAD | • tetramethyllead n. (Organic chemistry) A compound with chemical formula C4H12Pb, used as an antiknock additive for gasoline. • TETRAMETHYLLEAD n. a volatile poisonous liquid used esp. formerly as an antiknock agent. |