A strap-on booster rocket separation maneuver, where four strap-on boosters are ejected at the same time in four directions 90-degrees/diametrically opposed to each other, forming a cross of exhaust plumes.

(mining) A vein or lode that crosses the main lode, sometimes accompanied by a change of course in the main lode.

An elaborate, stylized version of the Christian cross symbol that is unique to Ethiopia and Eritrea.

plural of cross-course

plural of Iron Cross

(mineralogy) A harmotome. / staurolite / chiastolite

plural of cross-stone

plural of cross-hatching

plural of cross-fertilisation

plural of cross cheque