The Welsh National Terminology Portal includes collections of specialist terminology which have been standardised in collaboration with a number of specialist external bodies, for instance:
Mae Porth Termau Cenedlaethol Cymru'n cynnwys casgliadau o derminoleg arbenigol sydd wedi eu safoni mewn cydweithrediad â nifer o gyrff allanol arbenigol, er enghraifft: