10-letter words that end in ium
- lenocinium — tacit encouragement of, or assent to, adultery committed by one's partner
- locutorium — parlor (def 4).
- lycopodium — any erect or creeping, mosslike, evergreen plant of the genus Lycopodium, as the club moss or ground pine.
- meitnerium — a superheavy, synthetic, radioactive element. Symbol: Mt; atomic number: 109.
- mesovarium — the mesentery of the ovary.
- millennium — a period of 1000 years.
- miracidium — the larva that hatches from the egg of a trematode worm or fluke.
- monopodium — a single main axis that continues to extend at the apex in the original line of growth, giving off lateral branches beneath in acropetal succession.
- monosodium — containing one atom of sodium.
- moratorium — a suspension of activity: a moratorium on the testing of nuclear weapons.
- myocardium — the muscular substance of the heart.
- myometrium — The smooth muscle tissue of the uterus.
- nasturtium — any plant of the genus Tropaeolum, cultivated for its showy, usually orange, red, or yellow flowers or for its fruit, which is pickled and used like capers.
- natatorium — a swimming pool, especially one that is indoors.
- neopallium — neocortex.
- nephridium — the excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface.
- neutronium — (physics) the supposed material composed entirely of neutrons that composes a neutron star.
- notopodium — (zoology) The dorsal lobe or branch of a parapodium.
- oceanarium — a large saltwater aquarium for the display and observation of fish and other marine life.
- ommatidium — one of the radial elements composing a compound eye.
- opprobrium — the disgrace or the reproach incurred by conduct considered outrageously shameful; infamy.
- osmeterium — a glandular process on the first thoracic segment of many caterpillars that emits a noxious odor to ward off predators.
- osmiridium — iridosmine.
- oxycalcium — pertaining to or produced by oxygen and calcium.
- panaritium — a whitlow
- pancratium — (in ancient Greece) an athletic contest combining wrestling and boxing.
- paramecium — any ciliated freshwater protozoan of the genus Paramecium, having an oval body and a long, deep oral groove.
- parapodium — one of the unjointed rudimentary limbs or processes of locomotion of many worms, as annelids.
- peridinium — a member of the Peridinium genus of marine- or freshwater-dwelling dinoflagellate organisms characterized by armoured plates
- perigonium — the envelope of modified leaves surrounding the antheridia in mosses.
- perimysium — the connective tissue surrounding bundles of skeletal muscle fibers.
- phyllodium — phyllode.
- plasmodium — Biology. an ameboid, multinucleate mass or sheet of cytoplasm characteristic of some stages of organisms, as of myxomycetes or slime molds.
- polemonium — a member of the genus Polemonium
- praeludium — a prelude, now predominantly in a musical context
- praetorium — (in Roman history) the headquarters or residence of a Roman official, governor or military commander
- primordium — the first recognizable, histologically differentiated stage in the development of an organ.
- principium — a principle.
- procambium — the meristem from which vascular bundles are developed.
- promethium — a rare-earth, metallic, trivalent element. Symbol: Pm; atomic number: 61.
- proscenium — Also called proscenium arch. the arch that separates a stage from the auditorium. Abbreviation: pros.
- prostomium — the unsegmented, preoral portion of the head of certain lower invertebrates.
- psalterium — the omasum.
- puerperium — the four-week period following childbirth.
- quadrivium — (during the Middle Ages) the more advanced division of the seven liberal arts, comprising arithmetic, geometry, astronomy, and music.
- quarkonium — a meson composed of a quark and an antiquark of the same flavor.
- sanatorium — a hospital for the treatment of chronic diseases, as tuberculosis or various nervous or mental disorders.
- sanitarium — an institution for the preservation or recovery of health, especially for convalescence; health resort.
- sanitorium — a facility for housing patients with long-term illnesses
- sclerotium — a vegetative, resting food-storage body in certain higher fungi, composed of a compact mass of hardened mycelia.