| hygroscopic | adj. | absorbing moisture from the surrounding atmosphere | ||
| hylozoism | n. | belief that life is an inherent property of all matter | ||
| hylozoism | n. | theory that all matter has life, that life is merely a property of matter | ||
| hymeneal | adj. | of marriage; of the hymen | ||
| hymnody | n. | the singing or composition of hymns | ||
| hyperacusis | n. | hypersensitivity to sound, esp. loud noises | ||
| hyperekplexia | n. | condition characterized by overlarge startle response to unexpected stimuli | ||
| hyperemesis | n. | unstoppable vomiting | ||
| hyperesthesia | n. | excessive sensitivity of nerves, as to pain, etc.; algesia | ||
| hyperopia | n. | farsightedness | ||
| hypertrophy | n. | excessive growth or development | ||
| hypethral | adj. | (also hypaethral) open to the sky, without a roof | ||
| hyphema | n. | accumulation of blood within the front of the eyeball | ||
| hypocaust | n. | hollowed flooring into which heated air was sent to raise the temperature of a room or bath (in ancient Rome) | ||
| hypocephalus | n. | small disks placed beneath head of the dead in Late Period Egyptian funeral practice | ||
| hypochondria | n. | upper region of the abdomen, including the organs of the liver and the spleen | obsolete | |
| hypostatize | v. | to treat as a distinct object or reality | ||
| hypotaxis | n. | subordination of a clause to another | ||
| hypothermia | n. | body temperature lower than normal | ||
| hyssop | n. | aromatic herb of the genus Hyssopus; Biblical plant, perhaps related to oregano, whose twigs were used in Jewish rituals for sprinkling | ||
| hysteresis | n. | the lag of magnetic effects behind their causes; system phenomenon in which present reaction to change is dependent upon past reactions to change | ||
| hythe | n. | river landing spot, small port or harbor | British | |
| ibogaine | n. | hallucinogenic alkaloid derived from West African members of the dogbane family | ||
| ice-cream suit | n. | man’s light suit of white, or light pastel | ||
| iceblink | n. | brightness in sky caused by light reflection off of sea ice or glaciers | ||
| ichneumon | n. | Egyptian mongoose; parasitic wasp or other insect which lays its eggs in the larvae or pupae of other insects | ||
| iconoclast | n. | destroyer of religious images; one who criticizes or attacks orthodoxy; independent thinker | ||
| icterine | adj. | yellowish color, jaundice yellow | ||
| ictus | n. | metrical stress; epileptic seizure; stroke | ||
| idiolect | n. | an individual’s particular speech pattern | ||
| idiolect | n. | the peculiar speech patterns of an individual | ||
| ilex | n. | holm oak, evergreen oak; holly | ||
| illation | n. | conclusion, inference, deduction | ||
| illeism | n. | referring to oneself in the third person | ||
| illude | v. | to trick, to deceive; to mock | ||
| imbricate | v. | to overlap, as in roof tiles | ||
| imbrute | v. | to transform or devolve into a brute; to make brutal | ||
| immie | n. | marble | informal | |
| immiserate | v. | to make impoverished; to make miserable | ||
| immure | v. | to imprison, to confine within walls | ||
| imp | v. | to engraft, to implant; (falconry) to graft feathers into a damaged wing so as to restore or improve flight | ||
| impecunious | adj. | penniless, poor | ||
| impedimenta | n. | encumbrances; baggage; traveling equipment | ||
| impendent | adj. | impending, imminent | ||
| impennous | adj. | without wings | ||
| imperator | n. | title conferred upon victorious general in Republican Rome; title for the Roman emperor; absolute ruler | ||
| impermeable | adj. | not allowing fluids to pass through | ||
| impervious | adj. | not capable of being affected or influenced | ||
| impi | n. | Zulu warrior unit | ||
| import | n. | meaning; significance |
