15-letter words starting with or
- 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.
- orange milkweed — butterfly weed (def 1).
- orangeman's day — the 12th of July, celebrated by Protestants in Northern Ireland to commemorate the anniversary of the Battle of the Boyne (1690)
- orangemen's day — July 12, an annual celebration in Northern Ireland and certain cities having a large Irish section, especially Liverpool, to mark both the victory of William III over James II at the Battle of the Boyne, July 1, 1690, and the Battle of Augbrim, July 12, 1690.
- orchestrational — Of or pertaining to orchestration.
- order of battle — the organization or hierarchy of military forces in preparation for a battle.
- order of canada — an order awarded to Canadians for outstanding achievement; established in 1967
- order-embedding — A function f : D -> C is order-embedding iff for all x, y in D, f(x) <= f(y) <=> x <= y. I.e. arguments and results compare similarly. A function which is order-embedding is monotonic and one-to-one and an injection. ("<=" is written in LaTeX as \sqsubseteq).
- ordered n-tuple — a set of n objects or quantities, where n is an integer, especially such a set arranged in a specified order (ordered n-tuple)
- orderly officer — Military. officer of the day, as in the British army or, formerly, in the U.S. Army.
- 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).
- ordinary degree — a university degree without honours
- ordinary income — taxable income, as salary and wages, other than capital gains.
- ordinary rating — a rank in the Royal Navy comparable to that of a private in the army
- ordinary seaman — a seaman insufficiently skilled to be classified as an able-bodied seaman. Abbreviation: O.D., O.S., o.s.
- ordinary shares — British. a share of common stock.
- ordnance survey — mapmaking agency
- orekhovo-zuyevo — a city in the W Russian Federation in Europe, E of Moscow.
- orestes complex — Psychoanalysis. an unconscious desire of a son to kill his mother.
- organic disease — a disease in which there is a structural alteration (opposed to functional disease).
- organic farming — farming with organic methods
- organized chaos — a complex situation or process that appears chaotic while having enough order to achieve progress or goals
- organized crime — illegal activities co-ordinated by groups
- organized labor — all workers who are organized in labor unions.
- organochlorines — Plural form of organochlorine.
- organomagnesium — pertaining to or noting an organic compound, especially an organic halide, containing magnesium linked to carbon.
- organomercurial — an organic compound containing mercury
- 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.
- oriental carpet — Oriental rug.
- orientationally — With regard to orientation.
- origination fee — a fee charged by a lender for evaluating and processing a loan application, usually a percentage of the face value of the loan.
- ornithodelphian — of or relating to mammals of the class Ornithodelphia
- ornithorhynchus — the platypus.
- 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.
- ortega saavedra — (José) Daniel [haw-se dah-nyel] /hɔˈsɛ dɑˈnyɛl/ (Show IPA), born 1945, Nicaraguan political leader: president 1985–90.
- ortega y gasset — José [haw-se] /hɔˈsɛ/ (Show IPA), 1883–1955, Spanish philosopher, journalist, and critic.
- 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.
- orthoboric acid — boric acid (def 1). Compare ortho- (def 2).
- orthodontically — from an orthodontic point of view
- orthodox church — the Christian church comprising the local and national Eastern churches that are in communion with the ecumenical patriarch of Constantinople; Byzantine Church.
- 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
- orthophosphoric — (chemistry) Describing the ordinary form of phosphoric acid and its derivatives.
- orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
On this page, we collect all 15-letter words starting with OR. It’s easy to find right word with a certain length. It is the easiest way to find 15-letter word that beginning with OR to use in Scrabble or Crossword puzzles.