12-letter words containing um
- helianthemum — (botany) Any of the genus Helianthemum of rockroses.
- helichrysums — Plural form of helichrysum.
- helium flash — the explosive burning of helium in the case of a star of low mass that occurs when the core is so dense that the matter has become degenerate. The burning causes a rapid rise in temperature until it is so high that the gas ceases to be degenerate, after which there is a rapid expansion
- hibernaculum — a protective case or covering, especially for winter, as of an animal or a plant bud.
- hologonidium — soredium.
- homologumena — the books in the New Testament generally held as authoritative and canonical by the early church.
- house number — the unique number given to each building on a street which forms part of that building's address
- human comedy — French La Comédie Humaine. a collected edition of tales and novels in 17 volumes (1842–48) by Honoré de Balzac.
- human genome — genetic code of human beings
- human nature — the psychological and social qualities that characterize humankind, especially in contrast with other living things.
- human rights — basic civil freedoms
- human safari — an organized tour that takes tourists to unfamiliar places where they can observe the lifestyle of indigenous or other local people: human safaris to remote tribal communities; a human safari through the slums of Mumbai.
- human shield — a person or group of people located or intentionally placed in a potential line of fire or in an area likely to be attacked.
- humanisation — Alternative form of humanization.
- humanitarian — having concern for or helping to improve the welfare and happiness of people.
- humanization — to make humane, kind, or gentle.
- humble plant — sensitive plant (def 1).
- humboldt bay — an inlet of the Pacific Ocean in NW California.
- humeral veil — a fringed scarf, usually white and ornamented in the middle, worn over the shoulders by a priest or subdeacon during certain parts of a High Mass.
- humification — the formation of humus.
- humiliations — Plural form of humiliation.
- hummingbirds — Plural form of hummingbird.
- humorousness — (uncountable) The state or quality of being humorous.
- humourlessly — Alternative spelling of humorlessly.
- hypogastrium — the lower and median part of the abdomen.
- illuminating — to enlighten, as with knowledge.
- illumination — an act or instance of illuminating.
- illuminative — giving light; illuminating.
- illuminators — Plural form of illuminator.
- illuminatory — Increasing informative qualities; explanatory.
- immune serum — a serum containing naturally or artificially produced antibodies to a given antigen, obtained from human or animal sources.
- in perpetuum — for ever
- in the dumps — a depressed state of mind (usually preceded by in the): to be in the dumps over money problems.
- inconsumable — not consumable; incapable of being consumed.
- incumbencies — Plural form of incumbency.
- incumbent on — holding an indicated position, role, office, etc., currently: the incumbent officers of the club.
- incumbrancer — (legal) One who holds incumbrance, or some legal claim, lien, or charge on an estate.
- incumbrances — Plural form of incumbrance.
- index number — a quantity whose variation over a period of time measures the change in some phenomenon.
- infundibulum — a funnel-shaped organ or part.
- inhalatorium — a room or building in which vapours are breathed in
- inhumanities — Plural form of inhumanity.
- insectariums — Plural form of insectarium.
- instrumental — serving or acting as an instrument or means; useful; helpful.
- instrumented — equipped with instruments to perform specified functions, as testing, measurement, or control: an instrumented railroad car.
- insulin pump — an external battery-powered device that injects insulin into the body at a programmed rate to control diabetes.
- interregnums — Plural form of interregnum.
- interstitium — (medicine) An interstitial space within a tissue or organ.
- intraluminal — Within a lumen.
- intumescence — a swelling up, as with congestion.