English to English Dictionary

Retinitis Pigmentosa

A group of rare, genetic disorders that involve a breakdown and loss of cells in the retina, leading to declining vision and eventual blindness.

Retorsion

An act of retaliation in kind; specifically, a retaliatory measure adopted by one nation against another for discourteous, unfriendly, or inequitable treatment, usually within legal bounds.

Retrocede

To cede or give back (territory, rights, or property) to a former owner or nation.

Retrogress

To return to a former, worse, or less developed state.

Retrogression

The act of returning to a previous, often worse, state or condition.

Revindication

The act of clearing someone or something of blame, suspicion, or doubt through new evidence or justification.

Revisionism

A policy of revision or modification, especially of Marxist theory or historical doctrines.

Revolutionary Socialism

A political philosophy and tradition within socialism that emphasizes the necessity of a radical social and political revolution to overthrow capitalist society and the state.

Rhapsodical

Extravagantly emotional, ecstatic, or enthusiastic in expression or manner.

Rhematic

Relating to or constituting the rheme of a sentence, which is the part that conveys new information or what is stated about the theme.

Rheological

Relating to the branch of physics that studies the flow and deformation of matter, both liquids and solids.

Rheology

The branch of physics and materials science that deals with the deformation and flow of matter, especially liquids and soft solids.