8-letter words that end in ium
- helenium — An American plant of the daisy family that bears many red to yellow flowers, each having a prominent central disk.
- hymenium — the sporogenous layer in a fungus, composed of asci or basidia often interspersed with various sterile structures, as paraphyses.
- illicium — (ichthyology) The modified dorsal fin on the head of anglerfish, acting as a lure.
- illinium — promethium. Symbol: Il.
- illuvium — the material accumulated through illuviation.
- imperium — command; supreme power.
- indicium — indicia (def 2).
- indusium — Botany, Mycology. any of several structures having a netlike or skirtlike shape, as the membranous overgrowth covering the sori in ferns.
- ingenium — genius; talent
- lararium — (in an ancient Roman home) a shrine for the Lares.
- lixivium — the solution, containing alkaline salts, obtained by leaching wood ashes with water; lye.
- lutecium — a trivalent rare-earth element. Symbol: Lu; atomic weight: 174.97; atomic number: 71.
- lutetium — a trivalent rare-earth element. Symbol: Lu; atomic weight: 174.97; atomic number: 71.
- lygodium — (botany) Any of the genus Lygodium of climbing ferns.
- masurium — technetium
- meconium — the first fecal excretion of a newborn child, composed chiefly of bile, mucus, and epithelial cells.
- motorium — the area of the brain or nervous system involved in movement
- mycelium — the mass of hyphae that form the vegetative part of a fungus.
- nebulium — a hypothetical element once thought to be present in emission nebulae because of certain unidentified spectral lines, now known to be forbidden transitions of oxygen and nitrogen ions.
- nihonium — a highly radioactive element, of which only a few atoms have ever been produced. Symbol: Nh; atomic no: 113; atomic wt: 286
- nobelium — a transuranic element in the actinium series. Symbol: No; atomic number: 102.
- oncidium — any of numerous tropical American orchids of the genus Oncidium, having clusters of flowers showing great variety in size, form, and color.
- onychium — a small fern plant of Old World tropics and subtropics
- oogonium — one of the undifferentiated germ cells giving rise to oocytes.
- opsonium — any food used as a relish, such as chutney
- palatium — a palace, especially the palace of an ancient Roman emperor.
- patagium — a wing membrane, as of a bat.
- peculium — property that a father or master allowed his child or slave to hold as his own
- peridium — the outer enveloping coat of the fruit body in many fungi.
- phormium — any plant of the New Zealand bulbous genus Phormium, with leathery evergreen leaves and red or yellow flowers in panicles
- podetium — (in certain lichens) a stalk bearing an apothecium.
- polonium — a radioactive element discovered by Pierre and Marie Curie in 1898; Symbol: Po; atomic number: 84; atomic weight: about 210.
- proprium — a nonessential property common to all the members of a class; attribute.
- psyllium — fleawort.
- puparium — a hard barrel-shaped case enclosing the pupae of the housefly and other dipterous insects
- pygidium — any of various structures or regions at the caudal end of the body in certain invertebrates.
- pyxidium — a seed vessel that opens transversely, the top part acting as a lid, as in the purslane.
- ranarium — a place for keeping or rearing frogs
- refugium — an area where special environmental circumstances have enabled a species or a community of species to survive after extinction in surrounding areas.
- rosarium — a rose garden.
- rubidium — a silver-white, metallic, active element resembling potassium, used in photoelectric cells and radio vacuum tubes. Symbol: Rb; atomic weight: 85.47; atomic number: 37; specific gravity: 1.53 at 20°C.
- samarium — a rare-earth metallic element discovered in samarskite. Symbol: Sm; atomic weight: 150.35; atomic number: 62; specific gravity: 7.49.
- scandium — a rare, trivalent, metallic element obtained from thortveitite. Symbol: Sc; atomic weight: 44.956; atomic number: 21; specific gravity: 3.0.
- scholium — Often, scholia. an explanatory note or comment. an ancient annotation upon a passage in a Greek or Latin text.
- scrinium — a cylindrical container used in ancient Rome to hold papyrus rolls.
- selenium — a nonmetallic element chemically resembling sulfur and tellurium, occurring in several allotropic forms, as crystalline and amorphous, and having an electrical resistance that varies under the influence of light. Symbol: Se; atomic weight: 78.96; atomic number: 34; specific gravity: (gray) 4.80 at 25°C, (red) 4.50 at 25°C.
- silicium — silicon.
- silphium — an American flowering wild plant of the family Asteraceae
- simulium — a blood-sucking, tropical fly of the genus Simulium
- solarium — a glass-enclosed room, porch, or the like, exposed to the sun's rays, as at a seaside hotel or for convalescents in a hospital.