12-letter words containing a, s, l, o
- oligochaetes — Plural form of oligochaete.
- oligophagous — (especially of insects) eating only a few types of food.
- oligospermia — (medicine) Low volume of semen.
- omnishambles — Chiefly British Informal. a situation, especially in politics, in which poor judgment results in disorder or chaos with potentially disastrous consequences.
- omphaloscopy — Introversion.
- on all fours — all four limbs or extremities; the four legs or feet of an animal or both arms and both legs or both hands and both feet of a person: The cat rolled off the ledge but landed on all fours.
- on the slate — on credit
- onomasiology — the study of the means of expressing a given concept.
- opalescently — In an opalescent manner.
- open slather — to spread or apply thickly: to slather butter on toast.
- operatorless — Without an operator (person who operates); fully automatic.
- ophiolatrous — of, relating to, or practising snake-worshipping
- ophthalmitis — ophthalmia.
- opposability — capable of being placed opposite to something else: the opposable thumb of primates.
- oppositional — the action of opposing, resisting, or combating.
- oppressional — Exhibiting or relating to oppression.
- 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.
- oracle bones — animal bones used for divination
- oracularness — the state of being oracular
- 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
- oral surgery — the branch of dentistry or of surgery dealing with the surgical treatment or repair of various conditions of the mouth or jaws.
- orchestrally — In an orchestral manner.
- orichalceous — relating to or resembling orichalc
- original sin — Theology. a depravity, or tendency to evil, held to be innate in humankind and transmitted from Adam to all humans in consequence of his sin. inclination to evil, inherent in human nature.
- orthoclastic — (of a crystal) having cleavages at right angles to each other.
- oscillations — Plural form of oscillation.
- oscillograms — Plural form of oscillogram.
- oscillograph — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- 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
- over-jealous — feeling resentment against someone because of that person's rivalry, success, or advantages (often followed by of): He was jealous of his rich brother.
- overanalysis — the separating of any material or abstract entity into its constituent elements (opposed to synthesis).
- overbalances — Third-person singular simple present indicative form of overbalance.
- overclassify — to classify to excess
- 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.
- pack of lies — false account
- 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.