French to English Dictionary (Dictionnaire Français-Anglais)

Ornithology

The scientific study of birds, including their physiology, behavior, and conservation.

Ornithophobia

An irrational fear of birds.

Ornithorhynchus

A genus of egg-laying mammals that includes the platypus, characterized by a duck-bill and webbed feet.

Orphrey

An ornamental band or border, especially one made of gold or silver thread, used in ecclesiastical vestments.

Orris

The dried rhizome of the iris plant, used in perfumery and cosmetics.

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.

Orthograph

The conventional spelling system of a language.

Orthography

The conventional spelling system of a language.

Orthonormal

Referring to a set of vectors that are mutually orthogonal and each of unit length.

Oscillation

Movement back and forth at a regular speed.