quark
noun/kwɑrk/
Frequency rank: #12,438 most common English word
Meaning
A fundamental subatomic particle that combines with others to form hadrons such as protons and neutrons.

Example sentence
The physicist explained that protons are made up of three tiny particles called quark.
Practice this word in the quiz
More words in ranks 12,401–12,500
- parochialHaving a limited or narrow outlook, concerned only with local matters.
- persistentlyIn a way that continues firmly despite difficulty or opposition; repeatedly and without giving up.
- phenotypeThe set of observable physical characteristics of an organism, resulting from the interaction of its genes and environment.
- planktonmicroscopic organisms that drift or float in bodies of water and form the base of aquatic food chains.
- puntera person who gambles or places a bet, especially on a sporting event; also informally used to mean a customer or ordinary person.
- redactedhaving had sensitive or private information removed or blacked out before publication.
- renovateto repair and improve something, especially a building, so that it is in good condition again.
- respirationThe process of breathing; the exchange of oxygen and carbon dioxide in living organisms.
- ruffA stiff, pleated or frilled collar worn in the 16th and 17th centuries.
- rumpthe hindquarters or buttocks of an animal or person.