12-letter words containing a, p, o, r, i, s
- metamorphist — a member of a group of 16th century Christians who believed that the humanly body of Jesus Christ metamorphosed into God during the Ascension
- microamperes — Plural form of microampere.
- microcapsule — a tiny capsule, 20–150 microns in diameter, used for slow-release application of drugs, pesticides, flavors, etc.
- microphagous — (of an animal) feeding on small particles of food
- microphallus — The condition of having an abnormally small penis; micropenis.
- misanthropes — Plural form of misanthrope.
- misanthropic — of, relating to, or characteristic of a misanthrope.
- misoperation — an act or instance, process, or manner of functioning or operating.
- misportrayal — the act of portraying.
- morphallaxis — Biology. the regeneration of a destroyed body part by the reorganization of its remaining cells.
- mycoparasite — a parasitic fungus whose host is another fungus.
- neuropathies — Plural form of neuropathy.
- neuropathist — a specialist in treating diseases of the nervous system; a neurologist
- neuroplastic — Of or pertaining to neuroplasticity.
- non-partisan — A person or group that is non-partisan does not support or help a particular political party or group.
- nonparasitic — Not parasitic.
- nonpasserine — (of a bird) not belonging or relating to the Passeriformes
- nonspherical — not spherical
- nonspiritual — Not spiritual.
- np-hilarious — (humour) An algorithm whose complexity is a joke, either literally, as in BogoSort, or metaphorically.
- octastrophic — having or containing eight verses or strophes
- oilseed rape — Oilseed rape is a plant with yellow flowers which is grown as a crop. Its seeds are crushed to make cooking oil.
- old prussian — a Baltic language extinct since the 17th century. Abbreviation: OPruss.
- oligospermia — (medicine) Low volume of semen.
- on shipboard — on board a ship
- opera singer — a professional singer of opera
- operationism — the doctrine that the meaning of a scientific term, concept, or proposition consists of the operation or operations performed in defining or demonstrating it.
- operatorship — (in the oil and gas industries) the right to operate a well, field, or other oil source.
- ophiolatrous — of, relating to, or practising snake-worshipping
- opinionators — Plural form of opinionator.
- opisthograph — a manuscript, parchment, or book having writing on both sides of the leaves.
- oppressional — Exhibiting or relating to oppression.
- optoisolator — A device that transmits a signal optically between two isolated electronic circuits.
- orthopaedics — (used with a singular verb) the medical specialty concerned with correction of deformities or functional impairments of the skeletal system, especially the extremities and the spine, and associated structures, as muscles and ligaments.
- orthopaedist — Alternative spelling of orthopedist.
- 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.
- outspreading — Present participle of outspread.
- overemphasis — excessive or undue emphasis.
- pacific rose — a large variety of eating apple from New Zealand, with sweet flesh
- 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.
- pantisocracy — a community, social group, etc, in which all have rule and everyone is equal
- parachronism — a chronological error in which a person, event, etc., is assigned a date later than the actual one.
- paramorphism — the process by which a paramorph is formed.
- paraphimosis — inability to retract the penis into the prepuce as a result of narrowing of the prepuce
- parapophysis — the process of a vertebra
- parasitology — the branch of biology dealing with parasites and the effects of parasitism.
- parasol pine — stone pine (def 1).
- parasphenoid — a bone next to the sphenoid bone in the skull of some animals
- parish house — a building used by a church chiefly for administrative and social purposes.
- parkinsonian — (sometimes initial capital letter) of, related to, or resembling Parkinson's disease.