13-letter words containing l, i, s, o
- off-side rule — A lexical convention due to Landin, allowing the scope of declarations in a program to be expressed by indentation. Any non-whitespace token to the left of the first such token on the previous line is taken to be the start of a new declaration. Used in, for example, Miranda and Haskell.
- officeholders — Plural form of officeholder.
- oil-based mud — Oil-based mud is a drilling fluid that is an emulsion containing oil as the base fluid.
- oilspot glaze — a brown or black ceramic glaze dotted with silvery spots caused by impurities.
- old ironsides — the U.S. frigate Constitution (used as a nickname).
- old ritualist — Raskolnik.
- old-fashioned — of a style or kind that is no longer in vogue: an old-fashioned bathing suit.
- olefin series — alkene series.
- olfactologist — a medical specialist in the sense of smell
- oligopeptides — Plural form of oligopeptide.
- oligopolistic — the market condition that exists when there are few sellers, as a result of which they can greatly influence price and other market factors. Compare duopoly, monopoly (def 1).
- oligosiloxane — (organic chemistry) Any polysiloxane having a relatively small number of -Si-O- groups.
- olympic games — international sports event
- omnipresently — In an omnipresent manner.
- onanistically — In an onanistic manner.
- onomastically — In an onomastic way.
- onomatologist — One versed in the history of names.
- opprobriously — In an opprobrious manner.
- optical glass — any of several types of high-quality, homogeneous, color-free glass, as flint or crown glass, having specified refractive properties, used in lenses and other components of optical systems.
- optical mouse — (hardware) Any kind of mouse that uses visible light or infrared to detect changes in its position.
- optical sound — sound recorded on and subsequently played back from an optical or photographic soundtrack, as opposed to a magnetic soundtrack.
- oral solution — An oral solution is a medicine in liquid form for drinking.
- orchestralist — a person who writes or arranges orchestral music
- orchidologist — someone who is knowledgeable in orchidology
- ordinal scale — a scale on which data is shown simply in order of magnitude since there is no standard of measurement of differences: for instance, a squash ladder is an ordinal scale since one can say only that one person is better than another, but not by how much
- ordinary loss — An ordinary loss is a loss in the course of normal business.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organosilicon — pertaining to or noting an organic compound containing silicon, especially where attached directly to a carbon atom.
- orgiastically — In an orgiastic fashion.
- originalities — Plural form of originality.
- orismological — relating to orismology
- ornamentalism — the desire or tendency to feature ornament in the design of buildings, interiors, furnishings, etc.
- ornamentalist — A person who ornaments.
- ornithologist — the branch of zoology that deals with birds.
- orsellic acid — an acid found in lichens
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthosilicate — a silicate mineral
- oscillational — characterized by oscillation
- oscillographs — Plural form of oscillograph.
- oscillography — 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.
- oscillometric — an instrument for measuring oscillations, especially those of the arterial pulse.
- oscilloscopes — Plural form of oscilloscope.
- oscilloscopic — Relating to, or carried out by using an oscilloscope.
- ostensibility — The quality of being ostensible.
- osteomyelitis — an inflammation of the bone and bone marrow, usually caused by bacterial infection.
- osteoplasties — Plural form of osteoplasty.
- ostreiculture — the breeding of oysters
- otherworldish — characterized by otherworldliness
- outlaw strike — wildcat strike.
- outstandingly — prominent; conspicuous; striking: an outstanding example of courage.