1 noun action, process of formingfoirmiú masc c m usoil formationfoirmiú ithreachstar formationcruthú réaltaí2 noun setting upbunú masc c m u3 noun especially GEOL arrangement, structurefoirmíocht fem34 noun especially MIL of people, planes, etceagar masc1 c m ucombat formationeagar comhraic