12-letter words containing a, l, s, t, o
- oppositional — the action of opposing, resisting, or combating.
- optical disc — Also, optical disc. Also called laser disk. a grooveless disk on which digital data, as text, music, or pictures, is stored as tiny pits in the surface and is read or replayed by a laser beam scanning the surface.
- optical disk — Also, optical disc. Also called laser disk. a grooveless disk on which digital data, as text, music, or pictures, is stored as tiny pits in the surface and is read or replayed by a laser beam scanning the surface.
- optimistical — disposed to take a favorable view of events or conditions and to expect the most favorable outcome.
- optoisolator — A device that transmits a signal optically between two isolated electronic circuits.
- oral history — information of historical or sociological importance obtained usually by tape-recorded interviews with persons whose experiences and memories are representative or whose lives have been of special significance.
- oral society — a society that has not developed literacy
- orchestrally — In an orchestral manner.
- orthoclastic — (of a crystal) having cleavages at right angles to each other.
- oscillations — Plural form of oscillation.
- osteoblastic — a bone-forming cell.
- osteoclastic — (pathology) Of or pertaining to an osteoclast.
- osteological — Of or relating to osteology.
- osteomalacia — a condition characterized by softening of the bones with resultant pain, weakness, and bone fragility, caused by inadequate deposition of calcium or vitamin D.
- osteomalacic — a condition characterized by softening of the bones with resultant pain, weakness, and bone fragility, caused by inadequate deposition of calcium or vitamin D.
- osteoplastic — Surgery. pertaining to osteoplasty.
- out of scale — If something is out of scale with the things near it, it is too big or too small in relation to them.
- outlandishly — In an outlandish manner.
- outrageously — In an outrageous manner; to an outrageous degree.
- outside lane — the lane on a motorway where overtaking of other vehicles is permitted and vehicles can travel fastest
- owen stanley — a mountain range on New Guinea in SE Papua New Guinea. Highest peak, Mt. Victoria, 13,240 feet (4036 meters).
- oyster plant — salsify.
- palindromist — a word, line, verse, number, sentence, etc., reading the same backward as forward, as Madam, I'm Adam or Poor Dan is in a droop.
- palynologist — the study of live and fossil spores, pollen grains, and similar plant structures.
- paraglossate — having paraglossae
- parasitology — the branch of biology dealing with parasites and the effects of parasitism.
- parochialist — a parochial character, spirit, or tendency; excessive narrowness of interests or view; provincialism.
- passionately — having, compelled by, or ruled by intense emotion or strong feeling; fervid: a passionate advocate of socialism.
- pastoralness — the quality or state of being pastoral or rural
- patent rolls — (in Britain) the register of patents issued
- patroclinous — inheritance in which the traits of the offspring are derived primarily from the paternal parent (opposed to matrocliny).
- pearl oyster — any of several marine bivalve mollusks of the family Pteriidae, some of which form pearls of great value, inhabiting waters of eastern Asia and off the coasts of Panama and Baja California.
- penalty shot — a free shot at the goal defended only by the goalkeeper, awarded to an offensive player for certain defensive violations.
- penalty spot — a point within the penalty area and 12 yards (about 11 m) from the goal, from which a penalty kick may be taken
- pestological — relating to pestology
- petaliferous — bearing or having petals.
- petrodollars — Petrodollars are a unit of money used to calculate how much a country has earned by exporting petroleum or natural gas.
- phosphatidyl — an atom or group of atoms containing one or more unpaired electrons derived from a phosphatide
- photoanalyst — a person who analyzes and interprets photographs, especially a military specialist in aerial or satellite photography.
- photoelastic — displaying photoelasticity; of or relating to photoelasticity
- photorealism — a style of painting flourishing in the 1970s, especially in the U.S., England, and France, and depicting commonplace scenes or ordinary people, with a meticulously detailed realism, flat images, and barely discernible brushwork that suggests and often is based on or incorporates an actual photograph.
- phragmoplast — the cytoplasmic structure that forms at the equator of the spindle after the chromosomes have divided during the anaphase of plant mitosis, and that initiates cell division.
- pictorialism — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
- pictorialist — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
- pilot signal — a signal, as a flag or light, used to request a pilot.
- plainclothes — Plainclothes police officers wear ordinary clothes instead of a police uniform.
- plasma torch — an electrical device for converting a gas into a plasma, used for melting metal
- plasmosomata — a kind of nucleoli
- plasterboard — a material used for insulating or covering walls, or as a lath, consisting of paper-covered sheets of gypsum and felt.
- plastic bomb — a bomb made of plastic explosive.