15-letter words containing h, o, l, e
- northern parula — any of several American wood warblers of the genus Parula, especially P. americana (northern parula) having bluish plumage with a yellow throat and breast.
- northwestwardly — Towards the northwest.
- not the half of — only a small part of
- nucleophilicity — (uncountable) The condition of being nucleophilic.
- nucleosynthesis — the formation of new atomic nuclei by nuclear reactions, thought to occur in the interiors of stars and in the early stages of development of the universe.
- nucleosynthetic — Of or pertaining to nucleosynthesis.
- null hypothesis — (in the statistical testing of a hypothesis) the hypothesis to be tested.
- off the trolley — Describes the behaviour of a program that malfunctions and goes catatonic, but doesn't actually crash or abort. See glitch, bug, deep space.
- oil of the sick — holy oil used in the sacrament of extreme unction.
- old clothes man — a person who deals in second-hand clothes
- old father time — time personified
- old high german — High German before 1100. Abbreviation: OHG.
- old-established — established for a long time
- old-man-the-sea — (in The Arabian Nights' Entertainments) an old man who clung to the shoulders of Sindbad the Sailor for many days and nights.
- oligosaccharide — any carbohydrate yielding few monosaccharides on hydrolysis, as two, three, or four.
- on the heels of — the back part of the human foot, below and behind the ankle.
- 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.
- once in a while — at one time in the past; formerly: I was a farmer once; a once powerful nation.
- one's last hour — the time of one's death
- ophthalmoplegia — Paralysis of the muscles within or surrounding the eye.
- ophthalmoscopes — Plural form of ophthalmoscope.
- orchestrational — Of or pertaining to orchestration.
- organochlorines — Plural form of organochlorine.
- ornithodelphian — of or relating to mammals of the class Ornithodelphia
- ortho-toluidine — Chemistry. a light-yellow, very slightly water-soluble liquid, C 7 H 9 N, the ortho isomer of toluidine: used in the manufacture of dyes, saccharin, and other organic compounds, and in textile printing processes.
- orthokeratology — a technique for correcting refractive errors in vision by changing the shape of the cornea with the temporary use of progressively flatter hard contact lenses.
- orthopaedically — in an orthopaedic manner
- out in the cold — having a relatively low temperature; having little or no warmth: cold water; a cold day.
- out of the blue — the pure color of a clear sky; the primary color between green and violet in the visible spectrum, an effect of light with a wavelength between 450 and 500 nm.
- out of the loop — a portion of a cord, ribbon, etc., folded or doubled upon itself so as to leave an opening between the parts.
- overhead locker — a locker situated above someone's seat for storing luggage, etc
- overthrust belt — an elongate area in which thick rock layers have been pushed over one another by compressional forces within the earth's crust.
- package holiday — a holiday arranged by a travel company in which your travel and accommodation are booked for you
- paedophile ring — a group of people who take part in illegal sexual activity involving children
- palaeoanthropic — relating to palaeoanthropology
- palaeogeography — the study of geographical features of the geological past
- palaeontography — the branch of palaeontology concerned with the description of fossils
- palaeopathology — the study of diseases of ancient man and fossil animals
- palaeophytology — the study of ancient botany
- paleoencephalon — paleencephalon.
- paleogeophysics — (used with a plural verb) inferred geophysical conditions or processes of designated periods of the geologic past.
- paleolithic man — any of the prehistoric populations of humans, as the Cro-Magnon, living in the late Pliocene and the Pleistocene epochs.
- paraheliotropic — (of leaves) turning away from light; sun-avoiding
- passport holder — a person who has a passport
- pavel petrovich — Paul I (def 2).
- payment holiday — a break taken from paying ( a debt etc) back
- peachblow glass — an American art glass made in various pale colors and sometimes having an underlayer of milk glass.
- pentaerythritol — a white, crystalline, water-soluble powder, C 5 H 1 2 O 4 , used chiefly in the manufacture of alkyd resins, varnishes, plasticizers, and explosives.
- perchloric acid — a colorless, syrupy hygroscopic liquid, HClO 4 , an acid of chlorine containing one more oxygen atom than chloric acid: used chiefly as a reagent in analytical chemistry.
- perchloroethane — hexachloroethane.