12-letter words containing a, i, o
- bioacoustics — the study of animals' use of sound
- bioastronomy — the branch of biology which deals with the study or the discovery of life forms on other planets or in space
- bioavailable — the extent to which a nutrient or medication can be used by the body.
- bioflavonoid — any of a group of biologically active flavone compounds that may help maintain the blood's capillary walls, reducing the likelihood of hemorrhaging: widely found in plants, esp. citrus fruits
- biogeography — the branch of biology concerned with the geographical distribution of plants and animals
- biographical — Biographical facts, notes, or details are concerned with the events in someone's life.
- biohazardous — a pathogen, especially one used in or produced by biological research.
- bioinorganic — pertaining to the biological activity of metal complexes and nonmetal compounds based on elements other than carbon (contrasted with bioorganic).
- biologically — pertaining to biology.
- biomagnetics — the study of magnetic fields as a form of therapy
- biomagnetism — animal magnetism.
- biomechanics — the study of the mechanics of the movement of living organisms
- biometrician — a person who is knowledgeable about biometry
- biomolecular — relating to a biomolecule
- biosatellite — an artificial satellite for carrying living organisms
- biotechnical — relating to biotechnology
- bioturbation — the stirring of sediment by organisms
- bipropellant — a rocket propellant consisting of two substances, usually a fuel and an oxidizer
- birthday boy — the boy or man whose birthday is being celebrated
- bishop's-cap — any of a genus (Mitella) of small woodland plants of the saxifrage family, with two-lobed seedcases shaped like a bishop's hat
- bitter aloes — a bitter purgative drug made from the leaves of several species of aloe
- black heroin — a very potent and addictive form of heroin that is dark-colored.
- black liquor — (in making wood pulp for paper) the liquor that remains after digestion.
- blastocoelic — of or relating to the blastocoel
- blastulation — the process of blastula formation
- bletheration — nonsense!
- block caving — a method of mining a large block of ore by systematically undercutting so the ore will cave. Compare cave (def 5a).
- block island — an island off the coast of and a part of Rhode Island, at the E entrance to Long Island Sound.
- block signal — a fixed railroad signal governing the movements of trains entering and using a given section of track.
- blood spavin — a disease of the hock joint of horses in which enlargement occurs because of collected fluids (bog spavin) bony growth (bone spavin) or distention of the veins (blood spavin)
- bloodstained — Someone or something that is bloodstained is covered with blood.
- bloomingdale — a town in NE Illinois.
- blotting-pad — an object to one side of which a piece of blotting paper is attached for blotting text handwritten in ink
- boar-hunting — the practice of hunting wild boars
- boarding out — the local-authority practice of placing a client in a foster family or voluntary establishment and paying for it
- boardsailing — windsurfing
- boatbuilding — Boatbuilding is the craft or industry of making boats.
- boating lake — a lake in a park where rowing boats can be hired
- boating trip — a trip or holiday in a boat such as a sailing boat or canal boat
- boatsmanship — seamanship as applied to boats, especially rowboats and motorboats.
- body fascism — intolerance of those whose bodies do not conform to a particular view of what is desirable
- body repairs — repairs to the bodywork of cars
- bodyboarding — the sport of surfing using a bodyboard
- boilermaking — metal-working in heavy industry; plating or welding
- boletic acid — fumaric acid.
- bombay hills — a row of hills marking the southern boundary of greater Auckland on the North Island, New Zealand
- bond washing — a series of deals in bonds made with the intention of avoiding taxation
- boniface iii — pope a.d. 607.
- boniface vii — antipope a.d. 974, 984–985.
- boogie board — a small, flexible plastic surfboard, ridden lying down.