English to English Dictionary

Double-bonding

A covalent chemical bond between two atoms involving four bonding electrons rather than two.

Double-cross

To deceive or betray someone after pretending to cooperate with them.

Double-decker

A vehicle, such as a bus, train, or aircraft, having two levels or decks for passengers.

Double-down

To resolutely commit even more strongly to a particular course of action, policy, or belief, especially one that is risky or controversial.

Double-eagle

A score of three strokes under par on a single golf hole, also commonly referred to as an albatross.

Double-header

Two consecutive games or matches played between the same opposing teams in one day.

Double-ligature

A complex typographic glyph formed by the joining of two separate ligatures or letters into a single unified character mark.

Doubling

The act of making something double or twice as much.

Doublon

An obsolete gold coin of Spain and Spanish America, formerly worth two pistoles.

Doubloon

A former gold coin of Spain and Spanish America, worth two escudos or sixteen silver reales.

Doubt

To feel uncertain about something.

Doubter

A person who is uncertain or skeptical about something.