18-letter words containing b, a, c, t, r, i
- object-orientation — object-oriented
- octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
- optical brightener — an additive that dyes and brightens fabric or paper
- precipitable water — the total water vapor contained in a unit vertical column of the atmosphere.
- provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
- public corporation — a corporation, owned and operated by a government, established for the administration of certain public programs.
- rabbit-foot clover — a plant, Trifolium arvense, having trifoliate leaves with narrow leaflets and fuzzy, cylindrical, grayish-pink flower heads.
- rabbit-proof fence — a fence through which rabbits are unable to pass
- radiocarbon dating — the determination of the age of objects of organic origin by measurement of the radioactivity of their carbon content.
- selective abortion — the aborting of particular embryos for medical or social reasons
- sodium bicarbonate — a white, crystalline, water-soluble solid, in powder or granules, NaHCO 3 , usually prepared by the reaction of soda ash with carbon dioxide or obtained from the intermediate product of the Solvay process by purification: used chiefly in the manufacture of sodium salts, baking powder, and beverages, as a laboratory reagent, as a fire extinguisher, and in medicine as an antacid.
- stationary bicycle — an exercise bike
- subatomic particle — physics:
- subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
- subsistence farmer — a farmer who consumes most of the produce he grows, leaving little or nothing to be marketed
- substitute teacher — educator: replaces sb temporarily
- tectorial membrane — membrane in the inner ear that covers the organ of Corti
- the baptist church — any of various Protestant churches that believe in the baptism of believers
- the general public — the people in a society; people in general
- whittaker chambers — Robert, 1802–71, Scottish publisher and editor.
- wingback formation — single wingback formation.