English to English Dictionary
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World Languages Lexicon
10 Language-to-English DictionariesOptimum
The most favorable condition, degree, or amount for obtaining a given result.
Option
A thing that is or may be chosen.
Optometrist
A health care professional who examines eyes for visual defects and prescribes corrective lenses.
Opulence
Great wealth or luxuriousness.
Orange juice
A fruit juice obtained by squeezing or reaming the interior of oranges.
Orderly
Neatly and methodically arranged, organized, or conducted.
Ordinary-level
A former subject-based academic qualification in the UK (except Scotland), usually taken by students aged 15 or 16, replaced by the GCSE.
Organelle
Any of a number of organized or specialized structures within a living cell.
Organization
An organized body of people with a particular purpose, such as a business, government agency, association, or charity.
Organize
To arrange systematic structure or to coordinate things or people effectively.
Organza
A thin, stiff, transparent fabric traditionally made of silk, now also made of synthetic fibers like polyester.
Orientation
The determination of the relative position of something or someone (especially oneself) in relation to the points of compass or other specific directions.