15-letter words containing h, a, o
- 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
- oxyphenbutazone — an anti-inflammatory treatment for arthritis or bursitis
- oyster toadfish — See under toadfish (def 1).
- 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
- 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
- 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.
- panophthalmitis — the inflammation of all eye tissue
- panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
- paphian goddess — Aphrodite, worshiped in Cyprus as the goddess of sexual love.
- 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
- pat on the back — to strike lightly or gently with something flat, as with a paddle or the palm of the hand, usually in order to flatten, smooth, or shape: to pat dough into flat pastry forms.
- patagonian hare — a burrowing, gray, long-eared and long-legged cavy of the genus Dolichotis, native to South America.
- patchwork quilt — cover sewn from patches of cloth
- pathophysiology — the physiology of abnormal or diseased organisms or their parts; the functional changes associated with a disease or syndrome.
- 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.
- peacock feather — a (distinctive and brightly coloured) feather from the peacock
- pedagoguishness — the quality of being pedagoguish
- 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.