12-letter words containing e, r, o, s, i
- 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.
- oleoresinous — pertaining to, characteristic of, or containing oleoresin.
- oligospermia — (medicine) Low volume of semen.
- oliver twist — a novel (1838) by Dickens.
- omnipresence — present everywhere at the same time: the omnipresent God.
- on your side — If something is on your side or if you have it on your side, it helps you when you are trying to achieve something.
- one's senior — a person older than oneself
- 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.
- oppressional — Exhibiting or relating to oppression.
- oppressively — burdensome, unjustly harsh, or tyrannical: an oppressive king; oppressive laws.
- optometrists — Plural form of optometrist.
- or something — You use something in expressions such as 'or something' and 'or something like that' to indicate that you are referring to something similar to what you have just mentioned but you are not being exact.
- oral society — a society that has not developed literacy
- orange stick — a slender, rounded stick, originally of orangewood, having tapered ends and used in manicuring, especially to push back the cuticles or clean the fingernails.
- orchestrions — Plural form of orchestrion.
- orchidaceous — belonging to the plant family Orchidaceae.
- ordinariness — of no special quality or interest; commonplace; unexceptional: One novel is brilliant, the other is decidedly ordinary; an ordinary person.
- ore dressing — Metallurgy. the mechanical processes by which valuable minerals are separated from ore.
- oreopithecus — a genus of fossil primate from the Miocene coal deposits of Italy, formerly considered to be a possible hominid.
- orichalceous — relating to or resembling orichalc
- orientations — Plural form of orientation.
- ornithopters — Plural form of ornithopter.
- orthogenesis — Biology. Also called orthoselection. evolution of a species proceeding by continuous structural changes in a single lineage without presenting a branching pattern of descent. a theory that the evolution of a species in a continuous, nonbranching manner is due to a predetermined series of alterations intrinsic to the species and not subject to natural selection.
- 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
- orthotonesis — accentuation of a proclitic or enclitic
- oscillometer — an instrument for measuring oscillations, especially those of the arterial pulse.
- oscillometry — an instrument for measuring oscillations, especially those of the arterial pulse.
- 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.
- ostrich fern — a tall North American fern, Matteuccia struthiopteris, with large mature leaves that resemble ostrich plumes, a popular landscaping plant whose curled new leaves, called fiddleheads, are eaten as a vegetable.
- otosclerosis — formation of new bone about the stapes or cochlea, resulting in hearing loss.
- outside work — work done off the premises of a business
- outsider art — art produced by untutored artists working by themselves and for themselves
- outsiderness — The state or condition of being an outsider.
- outspreading — Present participle of outspread.
- ovariotomies — Plural form of ovariotomy.
- over against — in opposition to; contrary to; adverse or hostile to: twenty votes against ten; against reason.
- over-anxious — excessively anxious.
- over-indexes — (in a nonfiction book, monograph, etc.) a more or less detailed alphabetical listing of names, places, and topics along with the numbers of the pages on which they are mentioned or discussed, usually included in or constituting the back matter.
- 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.
- overanalysis — the separating of any material or abstract entity into its constituent elements (opposed to synthesis).
- overcautious — excessively or unnecessarily cautious: Sometimes it doesn't pay to be overcautious in business.
- overclassify — to classify to excess
- overdiagnose — (medicine) To diagnose something more often than it actually occurs.