12-letter words containing ium
- ad arbitrium — at pleasure; at will.
- aldebaranium — (chemistry, obsolete) A rejected name for ytterbium.
- ammonium ion — the ion NH4+, formed from ammonia and present in aqueous solutions of ammonia and in many salts
- amphithecium — the outer layer of cells of the sporophyte of mosses and liverworts that develops into the outer parts of the spore-bearing capsule
- androclinium — clinandrium.
- antebrachium — (anatomy) The forearm.
- antependiums — Plural form of antependium.
- antibrachium — (anatomy) alternative spelling of antebrachium.
- appressorium — a flattened hypha of a parasitic fungus that penetrates the host tissues
- archesporium — archespore.
- archipallium — (anatomy) The oldest region of the brain's pallium, often considered contiguous with the olfactory cortex, but varying among species. In humans, the archipallium makes up the hippocampus.
- at a premium — If something is at a premium, it is wanted or needed, but is difficult to get or achieve.
- atmospherium — an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
- barium enema — an injection into the rectum of a preparation of barium sulphate, which is opaque to X-rays, before X-raying the lower alimentary canal
- barium oxide — a white or yellowish-white poisonous heavy powder used esp as a dehydrating agent. Formula: BaO
- barium x-ray — gastrointestinal series: x-ray examination of the upper or lower gastrointestinal tract after barium sulfate is given rectally (barium enema) or orally as a contrast medium.
- bimillennium — a period of two thousand years
- cadmium cell — a photocell with a cadmium electrode that is especially sensitive to ultraviolet radiation
- cerium metal — any of a subgroup of rare-earth metals, of which the terbium and yttrium metals comprise the other two subgroups.
- cladosporium — any of the species of fungi in the genus Cladosporium
- condominiums — Plural form of condominium.
- cork cambium — a layer of meristematic cells in the cortex of the stems and roots of woody plants, the outside of which gives rise to cork cells and the inside to secondary cortical cells (phelloderm)
- crematoriums — Plural form of crematorium.
- cuprammonium — an ion of copper oxide used (in solution) in the manufacture of rayon and other man-made fibres
- darmstadtium — a synthetic radioactive element produced in small quantities by cold fusion in a linear accelerator. Symbol: Ds; atomic no: 110
- deinotherium — any member of the genus Deinotherium, consisting of mammals resembling elephants that existed during the Miocene, Pliocene, and Pleistocene epochs
- dockominiums — Plural form of dockominium.
- dolphinarium — An aquarium in which dolphins are kept and trained for public entertainment.
- epithalamium — A song or poem celebrating a marriage.
- equilibriums — Plural form of equilibrium.
- euphoniumist — Someone who plays the euphonium.
- ferroniobium — An important alloy of iron and niobium.
- happy medium — a course of action or condition that is between two extremes: Our climate is a happy medium between hot and cold.
- harmoniumist — a person who plays a harmonium
- 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
- hologonidium — soredium.
- hypogastrium — the lower and median part of the abdomen.
- inhalatorium — a room or building in which vapours are breathed in
- insectariums — Plural form of insectarium.
- interstitium — (medicine) An interstitial space within a tissue or organ.
- ivy geranium — a trailing geranium, Pelargonium peltatum, of southern Africa, having a fleshy stem that becomes woody with age, glossy, ivy-shaped leaves, and clusters of flowers ranging from white to deep rose in color.
- kurchatovium — (chemistry) A rejected name for rutherfordium.
- leontopodium — any plant of the Eurasian alpine genus Leontopodium, esp L. alpinum
- leprosariums — Plural form of leprosarium.
- lithium lick — NeXT employees who have had too much attention from their esteemed founder, Steve Jobs, are said to have "lithium lick" when they begin to show signs of Jobsian fervour and repeat the most recent catch phrases in normal conversation, e.g. "It just works, right out of the box!"
- mare crisium — (Sea of Crises) a dark plain in the first quadrant of the face of the moon: about 66,000 sq. mi. (170,000 sq. km).
- mare imbrium — (Sea of Showers) a dark plain in the second quadrant of the face of the moon: about 340,000 sq. mi. (880,000 sq. km).
- medium strip — median strip.
- medium-dated — (of a gilt-edged security) having between five and fifteen years to run before redemption
- medium-sized — neither very large nor very small: a medium-sized house.
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