English to English Dictionary

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.

Origin

The point or place where something begins, arises, or is derived.

Original

Present or existing from the beginning; first or earliest.

Originality

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

Orthodontics

The branch of dentistry concerned with the prevention and correction of irregularities of the teeth.

Orthodontist

A dentist who is specially trained to diagnose, prevent, and treat dental and facial irregularities, particularly by using braces and aligners.

Orthodox

Following or conforming to traditional or generally accepted rules or beliefs, especially in religion.

Orthography

The conventional spelling system of a language.

Oscillation

Movement back and forth at a regular speed.

Osmosis

The process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

Ossification

The natural process of bone formation; the hardening of a soft substance into bone.