Portuguese to English Dictionary (Dicionário Português-Inglês)

Obsidian

A dark, glasslike volcanic rock that forms when lava cools rapidly without crystal growth.

Obsolescence

The state of being obsolete or no longer produced or used, or no longer useful.

Obstinacy

The quality or condition of being stubborn; refusing to change one's opinion or chosen course of action, despite attempts to persuade one to do so.

Occidental

Relating to the countries of the West, especially Europe and the Americas.

Officiate

To perform the duties or conduct the ceremony of an office or religious service.

Opacity

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

Opaque

Not transparent or translucent; impenetrable to light or not allowing light to pass through.

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.

Opulence

Great wealth or luxuriousness.

Originality

The ability to think independently and create new, fresh, or unique ideas and works.