Italian to English Dictionary (Dizionario Italiano-Inglese)

Opacity

The quality of being opaque; the inability of light to pass through something.

Opalescent

Showing varying colors as an opal does; exhibiting a milky, iridescent iridescence.

Operant

Active or effective; producing an effect, especially in behaviorist psychology referring to behavior that operates on the environment.

Operative

In operation or functioning; having operational validity or effect.

Operculum

A structure that serves as a lid or cover, particularly in biological contexts.

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.

Ophthalmoscope

An instrument with a light and mirror system used for examining the interior structures of the eye, especially the retina.

Opportune

Occurring at a favorable or appropriate time; well-timed.

Opportunistic

Taking advantage of opportunities as they arise, often with a connotation of being exploitative.

Oppositionism

The practice or philosophy of opposing or resisting a particular authority or ideology.

Oppressor

A person or entity that oppresses others, often through unjust or cruel use of power.