12-letter words containing s, p, i, r, o
- night person — a person who prefers to stay up late or who functions best during the nighttime hours.
- nitrophilous — (of plants) growing in soil well supplied with nitrogen
- 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-partisan — A person or group that is non-partisan does not support or help a particular political party or group.
- non-spurious — not genuine, authentic, or true; not from the claimed, pretended, or proper source; counterfeit.
- non-strophic — Also, strophical. consisting of, pertaining to, or characterized by a strophe or strophes.
- nondescripts — Plural form of nondescript.
- nonparasitic — Not parasitic.
- nonpasserine — (of a bird) not belonging or relating to the Passeriformes
- nonpurposive — lacking purpose
- nonspherical — not spherical
- nonspiritual — Not spiritual.
- np-hilarious — (humour) An algorithm whose complexity is a joke, either literally, as in BogoSort, or metaphorically.
- nyctitropism — tending to assume at or just before nightfall positions unlike those maintained during the day, as the leaves or flowers of certain plants.
- obreptitious — having the characteristics of acquiring something by deceitful means
- observership — someone or something that observes.
- octastrophic — having or containing eight verses or strophes
- 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.
- old prussian — a Baltic language extinct since the 17th century. Abbreviation: OPruss.
- oligospermia — (medicine) Low volume of semen.
- ombrophilous — (of plants) tolerant of wet conditions
- omnipresence — present everywhere at the same time: the omnipresent God.
- 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.
- opportunists — Plural form of opportunist.
- oppressional — Exhibiting or relating to oppression.
- oppressively — burdensome, unjustly harsh, or tyrannical: an oppressive king; oppressive laws.
- optoisolator — A device that transmits a signal optically between two isolated electronic 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.
- ornithoscopy — divination from the observation of birds
- 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
- orthotropism — Botany. orthotropic tendency or growth.
- 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.
- 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.
- outcroppings — Plural form of outcropping.
- outspreading — Present participle of outspread.
- outstripping — to outdo; surpass; excel.
- over-precise — definitely or strictly stated, defined, or fixed: precise directions.
- over-promise — a declaration that something will or will not be done, given, etc., by one: unkept political promises.