| heterogenous | (adjective) originating outside the body | Synonyms: heterogeneous |
|---|
| (adjective) consisting of elements that are not of the same kind or nature | Synonyms: heterogeneous |
| heteroicous | (adjective) having several forms of gametoecia on the same plant | Synonyms: polygamous, polyoicous |
|---|
| heterologous | (adjective) derived from organisms of a different but related species | - |
|---|
| (adjective) not corresponding in structure or evolutionary origin | Synonyms: heterologic, heterological |
| heterometabolous | (adjective) (of an insect) undergoing incomplete metamorphosis in which the nymph is essentially like the adult and there is no pupal stage | Synonyms: heterometabolic |
|---|
| heterosporous | (adjective) characterized by heterospory | - |
|---|
| heterozygous | (adjective) having dissimilar alleles at corresponding chromosomal loci | - |
|---|
| hiatus | (noun) a natural opening or perforation through a bone or a membranous structure | Synonyms: foramen |
|---|
| (noun) a missing piece (as a gap in a manuscript) | - |
| (noun) an interruption in the intensity or amount of something | Synonyms: abatement, reprieve, respite, suspension |
| hibiscus | (noun) any plant of the genus Hibiscus | - |
|---|
| hideous | (adjective) grossly offensive to decency or morality; causing horror | Synonyms: horrid, horrific, outrageous |
|---|
| (adjective) so extremely ugly as to be terrifying | Synonyms: repulsive |
| hilarious | (adjective) marked by or causing boisterous merriment or convulsive laughter | Synonyms: screaming, uproarious |
|---|
| hilus | (noun) (anatomy) a depression or fissure where vessels or nerves or ducts enter a bodily organ | Synonyms: hilum |
|---|
| hippocampus | (noun) a complex neural structure (shaped like a sea horse) consisting of grey matter and located on the floor of each lateral ventricle; intimately involved in motivation and emotion as part of the limbic system; has a central role in the formation of memories | - |
|---|
| hippopotamus | (noun) massive thick-skinned herbivorous animal living in or around rivers of tropical Africa | Synonyms: hippo, Hippopotamus amphibius, river horse |
|---|
| holometabolous | (adjective) (of an insect) undergoing complete metamorphosis | Synonyms: holometabolic |
|---|
| homoecious | (adjective) of parasites especially rust fungi; completing the entire life cycle on a single host | Synonyms: autoecious |
|---|
| homogeneous | (adjective) all of the same or similar kind or nature | Synonyms: homogenous |
|---|
| homogenous | (adjective) all of the same or similar kind or nature | Synonyms: homogeneous |
|---|
| homologous | (adjective) corresponding or similar in position or structure or function or characteristics; especially derived from an organism of the same species | - |
|---|
| (adjective) having the same evolutionary origin but not necessarily the same function | - |
| homonymous | (adjective) of or related to or being homonyms | Synonyms: homonymic |
|---|
| homophonous | (adjective) characteristic of the phenomenon of words of different origins that are pronounced the same way | - |
|---|
| homosporous | (adjective) characterized by homospory | - |
|---|
| homostylous | (adjective) (botany) having styles all of the same length | Synonyms: homostyled, homostylic |
|---|
| homozygous | (adjective) having identical alleles at corresponding chromosomal loci | - |
|---|
| homunculus | (noun) a person who is very small but who is not otherwise deformed or abnormal | Synonyms: manikin, mannikin |
|---|
| (noun) a tiny fully formed individual that (according to the discredited theory of preformation) is supposed to be present in the sperm cell | - |
| horrendous | (adjective) causing fear or dread or terror | Synonyms: awful, dire, direful, dread, dreaded, dreadful, fearful, fearsome, frightening, horrific, terrible |
|---|
| humerus | (noun) bone extending from the shoulder to the elbow | - |
|---|
| hummus | (noun) a thick spread made from mashed chickpeas, tahini, lemon juice and garlic; used especially as a dip for pita; originated in the Middle East | Synonyms: hommos, hoummos, humous, humus |
|---|
| humongous | (adjective) (used informally) very large | Synonyms: banging, thumping, walloping, whopping |
|---|
| humorous | (adjective) full of or characterized by humor | Synonyms: humourous |
|---|
| humourous | (adjective) full of or characterized by humor | Synonyms: humorous |
|---|
| humous | (noun) a thick spread made from mashed chickpeas, tahini, lemon juice and garlic; used especially as a dip for pita; originated in the Middle East | Synonyms: hommos, hoummos, hummus, humus |
|---|
| humus | (noun) a thick spread made from mashed chickpeas, tahini, lemon juice and garlic; used especially as a dip for pita; originated in the Middle East | Synonyms: hommos, hoummos, hummus, humous |
|---|
| (noun) partially decomposed organic matter; the organic component of soil | - |
| hydrocephalus | (noun) an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological | Synonyms: hydrocephaly |
|---|
| hydrous | (adjective) containing combined water (especially water of crystallization as in a hydrate) | Synonyms: hydrated |
|---|
| hymenopterous | (adjective) of or relating to insects of the order Hymenoptera | - |
|---|
| hypertonus | (noun) (of muscular tissue) the state of being hypertonic | Synonyms: hypertonia, hypertonicity |
|---|
| hypognathous | (adjective) having a projecting lower jaw | Synonyms: prognathic, prognathous |
|---|
| hypothalamus | (noun) a basal part of the diencephalon governing autonomic nervous system | - |
|---|
| hypotonus | (noun) (of muscular tissue) the state of being hypotonic | Synonyms: hypotonia, hypotonicity |
|---|
| iambus | (noun) a metrical unit with unstressed-stressed syllables | Synonyms: iamb |
|---|
| ichorous | (adjective) of or resembling or characterized by ichor or sanies | Synonyms: sanious |
|---|
| ichthyosaurus | (noun) ichthyosaurs of the Jurassic | - |
|---|
| icterus | (noun) yellowing of the skin and the whites of the eyes caused by an accumulation of bile pigment (bilirubin) in the blood; can be a symptom of gallstones or liver infection or anemia | Synonyms: jaundice |
|---|
| ictus | (noun) a sudden occurrence (or recurrence) of a disease | Synonyms: raptus, seizure |
|---|
| idolatrous | (adjective) relating to or practicing idolatry | - |
|---|
| (adjective) blindly or excessively devoted or adoring | - |
| igneous | (adjective) produced by the action of fire or intense heat | Synonyms: eruptive |
|---|
| (adjective) produced under conditions involving intense heat | Synonyms: pyrogenic, pyrogenous |
| (adjective) like or suggestive of fire | Synonyms: fiery |
| ignominious | (adjective) (used of conduct or character) deserving or bringing disgrace or shame | Synonyms: black, disgraceful, inglorious, opprobrious, shameful |
|---|
| ignoramus | (noun) an ignorant person | Synonyms: know nothing, uneducated person |
|---|
| ileus | (noun) blockage of the intestine (especially the ileum) that prevents the contents of the intestine from passing to the lower bowel | Synonyms: intestinal obstruction |
|---|
| illustrious | (adjective) having or conferring glory | - |
|---|
| (adjective) widely known and esteemed | Synonyms: celebrated, famed, famous, far-famed, notable, noted, renowned |
| impecunious | (adjective) not having enough money to pay for necessities | Synonyms: hard up, in straitened circumstances, penniless, penurious, pinched |
|---|
| imperious | (adjective) having or showing arrogant superiority to and disdain of those one views as unworthy | Synonyms: disdainful, haughty, lordly, overbearing, prideful, sniffy, supercilious, swaggering |
|---|
| impervious | (adjective) not admitting of passage or capable of being affected | Synonyms: imperviable |
|---|
| impetiginous | (adjective) of or relating to or having impetigo | - |
|---|
| impetuous | (adjective) marked by violent force | - |
|---|
| (adjective) characterized by undue haste and lack of thought or deliberation | Synonyms: brainish, hotheaded, impulsive, madcap, tearaway |
| impetus | (noun) the act of applying force suddenly | Synonyms: impulse, impulsion |
|---|
| (noun) a force that moves something along | Synonyms: drift, impulsion |
| impious | (adjective) lacking piety or reverence for a god | - |
|---|
| (adjective) lacking due respect or dutifulness | Synonyms: undutiful |
| inauspicious | (adjective) not auspicious; boding ill | Synonyms: unfortunate |
|---|
| (adjective) contrary to your interests or welfare | Synonyms: adverse, untoward |
| (adjective) presaging ill fortune | Synonyms: ill, ominous |
| incautious | (adjective) lacking in caution | - |
|---|
| (adjective) carelessly failing to exercise proper caution | - |
| incestuous | (adjective) relating to or involving incest | - |
|---|
| (adjective) resembling incest as by excessive intimacy | - |
| incommodious | (adjective) uncomfortably or inconveniently small | - |
|---|
| incongruous | (adjective) lacking in harmony or compatibility or appropriateness | - |
|---|
| inconspicuous | (adjective) not prominent or readily noticeable | Synonyms: invisible |
|---|
| incredulous | (adjective) not disposed or willing to believe; unbelieving | - |
|---|
| incubus | (noun) a male demon believed to lie on sleeping persons and to have sexual intercourse with sleeping women | - |
|---|
| (noun) someone who depresses or worries others | - |
| (noun) a situation resembling a terrifying dream | Synonyms: nightmare |
| incurious | (adjective) showing absence of intellectual inquisitiveness or natural curiosity | - |
|---|
| incus | (noun) a small bone in the middle ear between the malleus and the stapes | Synonyms: anvil |
|---|
| indecorous | (adjective) lacking propriety and good taste in manners and conduct | Synonyms: indelicate |
|---|
| (adjective) not in keeping with accepted standards of what is right or proper in polite society | Synonyms: indecent, unbecoming, uncomely, unseemly, untoward |
| indigenous | (adjective) originating where it is found | Synonyms: autochthonal, autochthonic, autochthonous, endemic |
|---|
| industrious | (adjective) characterized by hard work and perseverance | Synonyms: hardworking, tireless, untiring |
|---|
| (adjective) working hard to promote an enterprise | Synonyms: energetic, gumptious, up-and-coming |
| inefficacious | (adjective) lacking the power to produce a desired effect | - |
|---|
| infamous | (adjective) known widely and usually unfavorably | Synonyms: ill-famed, notorious |
|---|
| infectious | (adjective) easily spread | - |
|---|
| (adjective) of or relating to infection | - |
| (adjective) caused by infection or capable of causing infection | Synonyms: infective |
| infelicitous | (adjective) not appropriate in application; defective | - |
|---|
| (adjective) marked by or producing unhappiness | Synonyms: unhappy |
| ingenious | (adjective) showing inventiveness and skill | Synonyms: clever, cunning |
|---|
| ingenuous | (adjective) characterized by an inability to mask your feelings; not devious | Synonyms: artless |
|---|
| (adjective) lacking in sophistication or worldliness | Synonyms: innocent |
| inglorious | (adjective) not bringing honor and glory | - |
|---|
| (adjective) (used of conduct or character) deserving or bringing disgrace or shame | Synonyms: black, disgraceful, ignominious, opprobrious, shameful |
| inharmonious | (adjective) not in harmony | Synonyms: unharmonious |
|---|
| (adjective) lacking in harmony of parts | - |
| inhomogeneous | (adjective) not homogeneous | Synonyms: nonuniform |
|---|
| iniquitous | (adjective) characterized by iniquity; wicked because it is believed to be a sin | Synonyms: sinful, ungodly |
|---|
| injudicious | (adjective) lacking or showing lack of judgment or discretion; unwise | - |
|---|
| injurious | (adjective) harmful to living things | Synonyms: deleterious, hurtful |
|---|
| innocuous | (adjective) not injurious to physical or mental health | - |
|---|
| (adjective) lacking intent or capacity to injure | Synonyms: innocent |
| (adjective) not causing disapproval | Synonyms: unobjectionable |
| innoxious | (adjective) having no adverse effect | - |
|---|
| innumerous | (adjective) too numerous to be counted | Synonyms: countless, infinite, innumerable, multitudinous, myriad, numberless, uncounted, unnumberable, unnumbered, unnumerable |
|---|
| inodorous | (adjective) having no odor | Synonyms: odorless, odourless |
|---|
| insalubrious | (adjective) detrimental to health | Synonyms: unhealthful, unhealthy |
|---|
| insectivorous | (adjective) (of animals and plants) feeding on insects | - |
|---|
| insidious | (adjective) intended to entrap | - |
|---|
| (adjective) working or spreading in a hidden and usually injurious way | Synonyms: pernicious, subtle |
| (adjective) beguiling but harmful | - |
| instantaneous | (adjective) occurring with no delay | Synonyms: instant |
|---|
| intracutaneous | (adjective) relating to areas between the layers of the skin | Synonyms: intradermal, intradermic |
|---|
| intravenous | (adjective) within or by means of a vein | Synonyms: endovenous |
|---|
| introitus | (noun) entrance or opening to a hollow organ or tube (especially the vaginal opening) | - |
|---|
| invidious | (adjective) containing or implying a slight or showing prejudice | Synonyms: discriminatory |
|---|
| iridaceous | (adjective) of or pertaining to or characteristic of plants of the family Iridaceae | - |
|---|
| iridoncus | (noun) swelling of the iris of the eye | - |
|---|
| irreligious | (adjective) hostile or indifferent to religion | - |
|---|
| isochronous | (adjective) equal in duration or interval | Synonyms: isochronal |
|---|
| isomorphous | (adjective) having similar appearance but genetically different | Synonyms: isomorphic |
|---|
| isotropous | (adjective) invariant with respect to direction | Synonyms: isotropic |
|---|