stop squark

s- +‎ top +‎ squark, from top quark.

stop squark (plural stop squarks)

1. (physics) A squark which is the hypothetical supersymmetric partner of a top quark.
   Symbol: ${\displaystyle {\tilde {t}}}$

Note the s- prefix on both words.

(squarks) squark; sup squark, sdown squark, scharm squark, sstrange squark, stop squark, sbottom squark ^{(Category: en:Squarks)}