20-letter words starting with o
- operational database — (database) A database containing up-to-date, modifiable data, in contrast to a decision support database.
- operational strategy — a plan or set of plans for successfully running a business, etc
- operator overloading — overloading
- ophthalmodynamometer — a device for determining the nearest point of ocular convergence.
- optical mark reading — the reading of marks by an optical device whereby the information can be stored in machine-readable form
- order bill of lading — a bill of lading that is issued to the order of a shipper or consignee for delivery of the goods and that can be transferred by endorsement to third parties.
- order code processor — (processor) The ICL 2900, ICL 3900 and above term for "CPU".
- order of the thistle — an ancient Scottish order of knighthood revived by James VII of Scotland in 1687. It consists of the sovereign, 16 knights brethren, and extra members created by statute. It is the equivalent of the Order of the Garter, and is usually conferred on Scots
- organization expense — the costs associated with organizing a business entity and bringing it into existence
- orthognathic surgery — the surgical correction of deformities or malpositions of the jaw.
- orthopaedic mattress — a specially firm mattress designed to help correct or ameliorate the discomfort of disorders of the spine and joints
- orthophosphoric acid — a colorless, crystalline solid, H 3 PO 4 , the tribasic acid of pentavalent phosphorus: used chiefly in fertilizers, as a source of phosphorus salts, and in soft drinks as an acidulant and flavoring agent.
- oscillating universe — a variant model of the closed universe in which the universe undergoes cycles of expansion and contraction.
- ostensive definition — the definition of a term by pointing to one or more examples to which the term can be applied.
- ousterhout's fallacy — Ousterhout's dichotomy
- outside (of) the box — in a fresh, inventive, unconventional way
- over-intellectualize — to seek or consider the rational content or form of.
- overenthusiastically — With excessive enthusiasm.
- overseer of the poor — a minor official of a parish attached to the workhouse or poorhouse
- ovo-lacto vegetarian — a vegetarian who eats eggs and dairy products
- ovo-lacto-vegetarian — lacto-ovo-vegetarian.
- owner-occupied house — a house that is owned by the person who lives in it
- oxyacetylene welding — welding using an oxyacetylene burner