13-letter words containing r, e, c, l
- nontheatrical — not relating to the theatre
- norc compiler — Early system on NORC machine. Listed in CACM 2(5):16 (May 1959).
- normocephalic — Having a normal sized head; neither macrocephalic nor microcephalic; mesocephalic.
- normoglycemic — (medicine) Having the normal amount of glucose in the blood.
- north channel — a strait between SW Scotland and NE Ireland. 14 miles (23 km) wide at the narrowest point.
- nuclear force — strong interaction
- nuclear power — power derived from nuclear energy.
- nuclear waste — the radioactive by-products from the operation of a nuclear reactor or from the reprocessing of depleted nuclear fuel.
- nucleoprotein — any of the class of conjugated proteins occurring in cells and consisting of a protein combined with a nucleic acid, essential for cell division and reproduction.
- numerological — Of, pertaining to, or based on numerology.
- nutraceutical — A food containing health-giving additives and having medicinal benefit.
- obstacle race — a foot race in which the contestants are prevented in a specific way from covering the full course at top speed, as by having hurdles to jump, sacks enclosing the legs, or potatoes to pick up.
- obstetrically — (medicine) In terms of obstetrics.
- obstructively — In an obstructive manner.
- office-holder — An office-holder is a person who has an important official position in an organization or government.
- officeholders — Plural form of officeholder.
- old provencal — the Provençal language as found in documents from the 11th to the 16th centuries. Abbreviation: OPr.
- olfactometers — Plural form of olfactometer.
- olfactometric — Of or pertaining to olfactometry.
- omnicorporeal — Comprehending or including all bodies; embracing all substance.
- on reflection — second thoughts
- optical drive — optical disk drive
- optical fiber — optical fibre
- optical fibre — (communications) (fibre optics, FO, US "fiber", light pipe) A plastic or glass (silicon dioxide) fibre no thicker than a human hair used to transmit information using infra-red or even visible light as the carrier (usually a laser). The light beam is an electromagnetic signal with a frequency in the range of 10^14 to 10^15 Hertz. Optical fibre is less susceptible to external noise than other transmission media, and is cheaper to make than copper wire, but it is much more difficult to connect. Optical fibres are difficult to tamper with (to monitor or inject data in the middle of a connection), making them appropriate for secure communications. The light beams do not escape from the medium because the material used provides total internal reflection. See also FDDI, Optical Carrier n, SONET.
- oraculousness — the state of being oraculous
- orchard valve — an alfalfa valve of lesser diameter than the pipe it closes.
- orchestralist — a person who writes or arranges orchestral music
- 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
- orsellic acid — an acid found in lichens
- orthocephalic — having a medium or intermediate relation between the height of the skull and the breadth or length.
- orthoepically — In terms of correct pronunciation.
- orthopaedical — Pertaining to orthopaedics; characteristic of orthopaedia.
- orthosilicate — a silicate mineral
- oscillometric — an instrument for measuring oscillations, especially those of the arterial pulse.
- ostreiculture — the breeding of oysters
- over-analytic — pertaining to or proceeding by analysis (opposed to synthetic).
- over-reliance — confident or trustful dependence.
- overallocated — Allocated in excess.
- overbalancing — Present participle of overbalance.
- overcivilized — excessively civilized
- overcredulity — Excessive credulity.
- overcredulous — willing to believe or trust too readily, especially without proper or adequate evidence; gullible.
- overexcitable — Excessively excitable.
- oversocialize — to make social; make fit for life in companionship with others.
- overspeculate — to engage in thought or reflection; meditate (often followed by on, upon, or a clause).
- palaeocrystic — consisting of former glacial formation
- palaeocurrent — an ancient current, esp of water, evidence of which has been preserved in sedimentary rocks as fossilized ripple marks, etc
- paleotropical — belonging or pertaining to a geographical division comprising the Ethiopian and Oriental regions.
- paper-clipped — to fasten together with one or more paper clips: Paper-clip these letters and file them.
- parallelistic — of, relating to, or of the nature of a parallelism.