The term SQUID is an acronym for Superconducting Quantum Interference Device, which is a type of electrical device used to measure magnetic fields. The crossword solutions for SQUID are CALAMARI (8 letters), GIANT (5 letters), and SEAPEN (6 letters). CALAMARI is a type of squid commonly eaten as food, GIANT refers to the size of some species of squid, and SEAPEN is a type of small, stationary squid that lives in the ocean.