12-letter words containing n, a, p, o
- opsonization — to increase the susceptibility of (bacteria) to ingestion by phagocytes.
- optimisation — Alternative spelling of optimization.
- optimization — The design and operation of a system or process to make it as good as possible in some defined sense.
- orange pekoe — a black tea composed of the smallest top leaves and grown in India and Ceylon.
- oregon grape — an evergreen shrub, Mahonia aquifolium, of the barberry family, of the western coast of the U.S., having small blue berries and yellow flowers that are the state flower of Oregon.
- organography — the description or visual depiction of organs.
- organoleptic — perceived by a sense organ.
- organotropic — designating or of a substance or virus that travels predominantly to a specific organ
- oropharynxes — Plural form of oropharynx.
- orthopterans — Plural form of orthopteran.
- outer planet — any of the four planets with orbits outside the orbit of Mars, namely, the planets Jupiter, Saturn, Uranus, and Neptune.
- outplacement — counseling and assistance in finding a new job, provided by a company for an employee who has been or is about to be dismissed.
- outspreading — Present participle of outspread.
- over-explain — to make plain or clear; render understandable or intelligible: to explain an obscure point. Synonyms: explicate. Antonyms: confuse.
- overplanning — the act or instance of planning excessively
- oyster plant — salsify.
- pacification — to pacify.
- pack rolling — the hot rolling of metal sheets in two or more thicknesses to produce composite sheets.
- packinghouse — a building where foodstuffs are packed
- paedodontics — the branch of dentistry that focuses on the care of children's teeth
- paedogenesis — sexual reproduction in an animal that retains its larval features
- pain control — methods for the relief and management of pain
- paint roller — a roller of absorbent material, mounted on a handle, that is rolled in a trough of paint and then rolled over a flat surface to be painted.
- palaeobotany — the study of fossil plants
- paleo-indian — of, relating to, or characteristic of a New World cultural stage, c22,000–6000 b.c., distinguished by fluted-point tools and cooperative hunting methods.
- paleontology — the science of the forms of life existing in former geologic periods, as represented by their fossils.
- palification — the act of fortifying something with stakes
- 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.
- pan-european — of or relating to all or most of the countries of Europe.
- pancake coil — a coil (of wire, etc) wound in a flat circular shape
- pancake roll — A pancake roll is an item of Chinese food consisting of a small roll of thin crisp pastry filled with vegetables and sometimes meat.
- pancho-villa — Francisco [frahn-sees-kaw] /frɑnˈsis kɔ/ (Show IPA), (Doroteo Arango"Pancho Villa") 1877–1923, Mexican general and revolutionist.
- panchromatic — sensitive to all visible colors, as a photographic film.
- pancytopenia — an abnormally low level of all blood cells
- pandanaceous — of, relating to, or belonging to the Pandanaceae, an Old World tropical family of monocotyledonous plants including the screw pines
- panel doctor — a doctor within a given area available for consultation by patients insured under the National Health Insurance Scheme
- panic button — an alarm button for use in an emergency, as to summon help.
- panification — the making of bread
- panning shot — pan3 (def 6).
- panpharmacon — a remedy or panacea
- pantaloonery — foolery; humorous entertainment
- pantechnicon — a furniture van; moving van.
- pantisocracy — a community, social group, etc, in which all have rule and everyone is equal
- pantophagist — an omnivore
- pantophagous — characterized by pantophagy
- pantothenate — a widely occurring derivative of pantothenic acid
- papal nuncio — someone, such as an archbishop, who is a state's representative of or ambassador to the Pope
- parachronism — a chronological error in which a person, event, etc., is assigned a date later than the actual one.
- paracyanogen — a polymer of cyanogen