12-letter words containing s, e, p, i
- neutrophiles — (of a cell or cell part) having an affinity for neutral dyes.
- neutrosophic — Neutrosophy
- new politics — politics concerned more with grass-roots participation in the political process than with party loyalty or affiliation: identified especially with the candidacies of Senators Eugene McCarthy and George McGovern.
- newspapering — Present participle of newspaper.
- newspaperism — anything characteristic of newspapers, esp a word or phrase used only by journalists
- night person — a person who prefers to stay up late or who functions best during the nighttime hours.
- nobel prizes — any of various awards made annually, beginning in 1901, from funds originally established by Alfred B. Nobel for outstanding achievement in physics, chemistry, medicine or physiology, literature, and the promotion of peace; an annual award in economics was established in 1969 from private funds.
- non-specific — Non-specific medical conditions or symptoms have more than one possible cause.
- nondescripts — Plural form of nondescript.
- nonexpansile — Not expansile.
- nonexplosive — tending or serving to explode: an explosive temper; Nitroglycerin is an explosive substance.
- nonpasserine — (of a bird) not belonging or relating to the Passeriformes
- nonpurposive — lacking purpose
- nonspherical — not spherical
- nucleocapsid — the nucleic acid core and surrounding capsid of a virus; the basic viral structure.
- nucleophiles — Plural form of nucleophile.
- obreptitious — having the characteristics of acquiring something by deceitful means
- observership — someone or something that observes.
- octapeptides — Plural form of octapeptide.
- oesophagitis — Alternative spelling of esophagitis.
- office space — part of a building for business use
- oil deposits — reserves of petroleum found underground (or under the sea)
- oil pressure — force that keeps engine lubricated
- oilseed rape — Oilseed rape is a plant with yellow flowers which is grown as a crop. Its seeds are crushed to make cooking oil.
- oligopsonies — Plural form of oligopsony.
- oligospermia — (medicine) Low volume of semen.
- olympic-size — of the dimensions or length prescribed for the Olympic Games and other major athletic competitions: an Olympic-size speed-skating oval.
- omnipresence — present everywhere at the same time: the omnipresent God.
- one's pigeon — one's special concern, or business
- onion-shaped — bulb-shaped; shaped like an onion
- 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.
- opposite sex — man if woman, woman if man
- oppositeness — The state or condition of being opposite.
- oppressional — Exhibiting or relating to oppression.
- oppressively — burdensome, unjustly harsh, or tyrannical: an oppressive king; oppressive laws.
- optogenetics — (genetics) A science that combines optics and genetics to probe neural circuits.
- optometrists — Plural form of optometrist.
- oreopithecus — a genus of fossil primate from the Miocene coal deposits of Italy, formerly considered to be a possible hominid.
- ornithopters — Plural form of ornithopter.
- 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.
- orthopterist — someone who studies the Orthoptera
- oscilloscope — a device that gives a visual graph of amplitude versus time of a measured signal, as voltage or current.
- osteoplastic — Surgery. pertaining to osteoplasty.
- osteoporosis — a disorder in which the bones become increasingly porous, brittle, and subject to fracture, owing to loss of calcium and other mineral components, sometimes resulting in pain, decreased height, and skeletal deformities: common in older persons, primarily postmenopausal women, but also associated with long-term steroid therapy and certain endocrine disorders.
- osteoporotic — of, relating to, or caused by osteoporosis.
- outside loop — a loop during which the back of the airplane is on the outer side of the curve described by the course of flight.
- outspreading — Present participle of outspread.