(military) The strike version of the Saab 105 twin-engine training aircraft.

plural of 600-cell

(geometry) A four-dimensional polytope, analogous to an icosahedron, whose 600 bounding facets are tetrahedra.

plural of A-60

simple past tense and past participle of 69

present participle of 69

Alternative spelling of 60s

Alternative form of 60s

plural of 64-pounder

(computing) A superset of the x86 instruction set architecture, providing additional support for 64-bit addressing while remaining mostly backward compatible with older applications.