15-letter words containing r, e, a, l, n
- nuclear testing — the process of carrying out a test on a nuclear weapon to determine effectiveness, etc
- nuclear warhead — a warhead containing a fission or fusion bomb.
- nuclear-powered — powered by nuclear energy
- nuisance caller — someone who makes an unsolicited telephone call such as a prank call or a call for telemarketing purposes
- obedience trial — a competitive event at which a dog can progress toward a degree in obedience by demonstrating its ability to follow a prescribed series of commands.
- observationally — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- obtuse triangle — a triangle with one obtuse angle.
- oil of lavender — an essential oil distilled from lavender flowers, especially Lavandula angustifolia and L. stoechas, and used in perfumery.
- oil tanker pier — An oil tanker pier is a structure over water where oil tankers can stop and load or unload.
- old high german — High German before 1100. Abbreviation: OHG.
- old man's beard — fringe tree.
- old-man's-beard — fringe tree.
- oldenbarneveldt — Johan van. 1547–1619, Dutch statesman, regarded as a founder of Dutch independence; the leading figure (from 1586) in the United Provinces of the Netherlands: executed by Maurice of Nassau
- olfactory nerve — either one of the first pair of cranial nerves, consisting of sensory fibers that conduct to the brain the impulses from the mucous membranes of the nose.
- oligodendroglia — Oligodendrocytes collectively.
- oligomerisation — Alternative spelling of oligomerization.
- oligomerization — (chemistry) The formation of an oligomer from a monomer.
- omnidirectional — sending or receiving signals in all directions: an omnidirectional microphone.
- on the trail of — If you are on the trail of a person or thing, you are trying hard to find them or find out about them.
- one's last hour — the time of one's death
- operating cycle — the period of time between starting a business and making a profit
- operating table — table on which surgery is performed
- operationalised — Simple past tense and past participle of operationalise.
- operationalized — Simple past tense and past participle of operationalize.
- optical printer — a film printer used in making optical effects, consisting basically of a camera that photographs the image with special lenses to enlarge, reduce, distort, etc., and a projector that transfers the image to the print stock, as distinguished from a contact printer.
- optical scanner — the process of interpreting data in printed, handwritten, bar-code, or other visual form by a device (optical scanner or reader) that scans and identifies the data.
- orange milkweed — butterfly weed (def 1).
- orchestrational — Of or pertaining to orchestration.
- ordinal numbers — Also called ordinal numeral. any of the numbers that express degree, quality, or position in a series, as first, second, and third (distinguished from cardinal number).
- organized labor — all workers who are organized in labor unions.
- organochlorines — Plural form of organochlorine.
- organomercurial — an organic compound containing mercury
- oriental carpet — Oriental rug.
- orientationally — With regard to orientation.
- ornithodelphian — of or relating to mammals of the class Ornithodelphia
- outline drawing — a drawing consisting only of external lines
- over-analytical — pertaining to or proceeding by analysis (opposed to synthetic).
- over-compliance — the act of conforming, acquiescing, or yielding.
- over-population — to fill with an excessive number of people, straining available resources and facilities: Expanding industry has overpopulated the western suburbs.
- over-regulation — a law, rule, or other order prescribed by authority, especially to regulate conduct.
- overapplication — excessive application
- overcultivation — the act or art of cultivating.
- overemotionally — In an overemotional manner.
- overspeculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- overstimulation — to rouse to action or effort, as by encouragement or pressure; spur on; incite: to stimulate his interest in mathematics.
- overutilization — to put to use; turn to profitable account: to utilize a stream to power a mill.
- overzealousness — too zealous: overzealous for reform.
- oxytetracycline — a dull-yellow, crystalline antibiotic powder, C 2 2 H 2 4 N 2 O 9 , produced by Streptomyces rimosus, used chiefly in treating infections caused by streptococci, staphylococci, Gram-negative bacilli, rickettsiae, and certain protozoans and viruses.
- paedophile ring — a group of people who take part in illegal sexual activity involving children
- painter's colic — Pathology. lead poisoning causing intense intestinal pain.