U
(alsou
)noun
1 noun letterUuthe letter U an litir Uthe 'u' is missing tá an t-'u' ar lárthere's a fada on the 'u' tá fada ar an 'u' 2 noun position in list, sequence, ranking etcUAppendix U Aguisín U 3 noun CHEM symbol for uraniumU 4 noun shapeUa U-shaped frame fráma U-chruthach, fráma ar chruth U → see For usage examples see A