English to English Dictionary
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World Languages Lexicon
10 Language-to-English DictionariesOpaque
Not transparent or translucent; impenetrable to light or not allowing light to pass through.
Open a Pandora's box
To perform an action that small or seemingly harmless in itself, but which unexpectedly generates a vast and uncontrollable cascade of severe problems and complications.
Open-Neighborhood
A set of points in a topological space that includes a point and all points sufficiently close to it.
Operational Control
The authority or power to manage and direct operations within an organization.
Operations Management
The administration of business practices to create the highest level of efficiency possible within an organization.
Ophtalmological
Relating to the branch of medicine that deals with the anatomy, functions, and diseases of the eye.
Ophthalmologist
A physician who specializes in the medical and surgical care of the eyes and visual system, preventing, diagnosing, and treating eye diseases and disorders.
Ophthalmology
The branch of medicine concerned with the study and treatment of disorders and diseases of the eye.
Ophthalmoscope
An instrument with a light and mirror system used for examining the interior structures of the eye, especially the retina.
Oppositionism
The practice or philosophy of opposing or resisting a particular authority or ideology.
Oppression
The state of being subject to unjust treatment or control.
Optimum
The most favorable condition, degree, or amount for obtaining a given result.