15-letter words containing h, o, a, r

oligosaccharide — any carbohydrate yielding few monosaccharides on hydrolysis, as two, three, or four.
omnium gatherum — a miscellaneous collection.
omnium-gatherum — a miscellaneous collection.
on a shoestring — If you do something or make something on a shoestring, you do it using very little money.
on the contrary — opposite in nature or character; diametrically or mutually opposed: contrary to fact; contrary propositions.
on the decrease — decreasing
on the increase — growing, increasing
on the track of — If you are on the track of someone or something, you are trying to find them, or find information about them.
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.
on/off the mark — If something is off the mark, it is inaccurate or incorrect. If it is on the mark, it is accurate or correct.
one's last hour — the time of one's death
orange chromide — an Asian cichlid fish, Etropus maculatus, with a brownish-orange spotted body
orange hawkweed — a European composite plant, Hieracium aurantiacum, having orange, dandelionlike flowers, growing as a weed, especially in eastern North America.
orchestrational — Of or pertaining to orchestration.
ordinary shares — British. a share of common stock.
organized chaos — a complex situation or process that appears chaotic while having enough order to achieve progress or goals
organochlorines — Plural form of organochlorine.
organophosphate — Biochemistry. any of a variety of organic compounds that contain phosphorus and often have intense neurotoxic activity: originally developed as nerve gases, now widely used as insecticides and fire retardants.
ornithodelphian — of or relating to mammals of the class Ornithodelphia
orphaned i-node — (operating system) /or'f*nd i:'nohd/ [Unix] 1. A file that retains storage but no longer appears in the directories of a file system.
orthoboric acid — boric acid (def 1). Compare ortho- (def 2).
orthodontically — from an orthodontic point of view
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.
orthopaedic bed — a specially firm bed designed to help correct or ameliorate the discomfort of disorders of the spine and joints
orthopaedically — in an orthopaedic manner
orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
otaheite orange — a small citrus bush, Citrus limonia otaitensis, having fragrant flowers and small orange fruit, often cultivated as a houseplant.
out of thin air — suddenly and unexpectedly
outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
outreach worker — a person who does work designed to help and encourage disadvantaged members of the community
over one's head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
overachievement — to perform, especially academically, above the potential indicated by tests of one's mental ability or aptitude.
overemphasizing — Present participle of overemphasize.
overhead locker — a locker situated above someone's seat for storing luggage, etc
overorchestrate — to compose or arrange excessively
oyster toadfish — See under toadfish (def 1).
paedophile ring — a group of people who take part in illegal sexual activity involving children
pairs champions — competitors in or winners of a pairs championship
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
panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
paraheliotropic — (of leaves) turning away from light; sun-avoiding
paroemiographer — a person who writes or collects proverbs
parthenogenesis — development of an egg without fertilization.
parthenogenetic — development of an egg without fertilization.
passenger coach — a carriage in which passengers sit
passport holder — a person who has a passport
patagonian hare — a burrowing, gray, long-eared and long-legged cavy of the genus Dolichotis, native to South America.

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