
1) Hypothetical object 2) Quark matter
Found on
https://www.crosswordclues.com/clue/strangelet

A strangelet is a hypothetical particle consisting of a bound state of roughly equal numbers of up, down, and strange quarks. Its size would be a minimum of a few femtometers across (with the mass of a light nucleus). Once the size becomes macroscopic (on the order of metres across), such an object is usually called a quark star or `strange star.....
Found on
http://en.wikipedia.org/wiki/Strangelet
No exact match found.