| MESONIC | Of bound quarks and antiquarks |
| NUCLEONS | Bundles of bound quarks |
| MESONS | They're made of quarks and antiquarks |
| GELLMANN | Nobel Prize-winning physicist who proposed the concept of strangeness in quarks and contributed towards the classification of elementary particles (4-4) |
| PION | Composed of one up quark and one down antiquark, the lightest meson and a component of cosmic raays (4) |
| PROTONS | Particles composed of two up quarks and one down quark |
| PROTON | Two up quarks and a down quark |
| MESON | Subatomic particle intermediate in mass between an electron and a proton, typically composed of a quark and an antiquark (5) |
| NEUTRON | It contains an up quark and two down quarks |
| UPSILON | Meson made up of a bottom quark and its antiquark |
| CLUSTER | Aggregation of stars/galaxies; group of consonants; an ensemble of bound atoms; a bunch of grapes; or, a network of computers (7) |
| BOOKSHOP | A dealer in dictionaries, emporium for editions, haven for hardbacks, retailer of reads, store for stories or other bibliopolic paradise for the purchase and perusal of bound paper or pen-and-ink publ |
| SHEAF | Quantity of 24 arrows contained in a quiver; a bundle of paper; or, bunch of bound wheat stalks (5) |
| GINA | Gershon of Bound |
| TILLY | Jennifer of "Bound" |
| UNDO | Loosen part of bound objects (4) |
| SNP | Contributing to our fundamental understanding of the universe, the "truth" quark and most massive of all known elementary particles (3) |
| TOP | The "truth" quark and most massive of all elementary particles (3) |
| CHARM | In particle physics, one of the six flavours of quarks with top, bottom, up, down and strange that, along with leptons, form the basic building blocks of ordinary matter (5) |
| KAON | Particle that includes a strange quark or antiquark |
