from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of a class of subatomic particles that are composed of quarks and take part in the strong interaction. See Table at subatomic particle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A strongly interacting particle such as a proton. A particle which is affected by the strong nuclear force. A hadron is composed of quarks.
from the GNU version of the Collaborative International Dictionary of English
- n. any elementary particle that interacts strongly with other particles.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any elementary particle that interacts strongly with other particles
Greek hadros, thick; see sā- in Indo-European roots + -on1.(American Heritage® Dictionary of the English Language, Fourth Edition)
Ancient Greek ἁδρός (hadros, "thick"). (Wiktionary)