12-letter words containing a, s, m, u
- 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.
- humiliations — Plural form of humiliation.
- huntsmanship — The art or practice of hunting, or the qualification of a hunter.
- hydromedusae — Irregular plural form of hydromedusa.
- hypogastrium — the lower and median part of the abdomen.
- hypothalamus — a region of the brain, between the thalamus and the midbrain, that functions as the main control center for the autonomic nervous system by regulating sleep cycles, body temperature, appetite, etc., and that acts as an endocrine gland by producing hormones, including the releasing factors that control the hormonal secretions of the pituitary gland.
- illuminators — Plural form of illuminator.
- immatureness — not mature, ripe, developed, perfected, etc.
- immaturities — Plural form of immaturity.
- immeasurable — incapable of being measured; limitless: the immeasurable vastness of the universe.
- immeasurably — incapable of being measured; limitless: the immeasurable vastness of the universe.
- immensurable — immeasurable.
- immunisation — (British, immunology) alternative spelling of immunization.
- implicatures — Plural form of implicature.
- in a measure — to an extent
- inconsumable — not consumable; incapable of being consumed.
- incumbrances — Plural form of incumbrance.
- infamousness — The state or quality of being infamous; infamy.
- inharmonious — not harmonious; discordant; unmelodious.
- inhumanities — Plural form of inhumanity.
- insectariums — Plural form of insectarium.
- instrumental — serving or acting as an instrument or means; useful; helpful.
- james hutton — James, 1726–97, Scottish geologist: formulated uniformitarianism.
- jumpstarting — Present participle of jumpstart.
- jumpstations — Plural form of jumpstation.
- justicialism — the political doctrine of Juan Domingo Perón, formerly President of Argentina
- kalmar sound — a strait between SE Sweden and Öland Island. 85 miles (137 km) long; 14 miles (23 km) wide.
- lactalbumins — Plural form of lactalbumin.
- lady's-thumb — a smartweed, Polygonum persicaria, of the buckwheat family, having pink or purplish flowers and lance-shaped leaves with a spot resembling a thumbprint.
- land measure — any system of measurement for measuring land.
- languishment — the act or state of languishing.
- latus rectum — the chord perpendicular to the principal axis and passing through a focus of an ellipse, parabola, or hyperbola.
- leaf mustard — a pungent powder or paste prepared from the seed of the mustard plant, used as a food seasoning or condiment, and medicinally in plasters, poultices, etc.
- lemon squash — lemon soda; a soft drink of lemon juice and soda water.
- leprosariums — Plural form of leprosarium.
- liquidambars — Plural form of liquidambar.
- litmus paper — a strip of paper impregnated with litmus, used as a chemical indicator.
- long measure — Also called long meter. Prosody. a four-line stanza in iambic tetrameter, often used in hymns, with the second and fourth lines rhyming and sometimes the first and third lines rhyming as well.
- lukewarmness — The property of being lukewarm; ambivalence, weakness.
- lumbersexual — a man whose style of dress and appearance is reminiscent of the ruggedly masculine stereotype of the lumberjack, as in wearing plaid shirts and having a beard.
- macaberesque — resembling or suggestive of the danse macabre; macabre
- macrocarpous — having large fruit.
- macronucleus — the larger of the two types of nuclei occurring in ciliate protozoans, having a multiple set of chromosomes and functioning in cell metabolism and protein synthesis.
- macrophagous — (of an animal) feeding on relatively large particles of food
- macropterous — having long or large wings or fins.
- magic square — a square containing integers arranged in an equal number of rows and columns so that the sum of the integers in any row, column, or diagonal is the same.
- magnetopause — the boundary between the earth's magnetosphere and interplanetary space, about 40,000 miles (65,000 km) above the earth, marked by an abrupt decrease in the earth's magnetic induction.
- magnus annus — the Great Year: a cycle of years, usually a thousand, that begins with a Golden Age, steadily deteriorates, and ends with a universal catastrophe, either a fire or a flood.