(also nó u)nounAinmfhocal1letterUuthe letter Uan litir Uthe 'u' is missingtá an t-'u' ar lárthere's a fada on the 'u'tá fada ar an 'u'2position in list, sequence, ranking etcUAppendix UAguisín U3chemistryceimicsymbol for uraniumU4shapeUa U-shaped framefráma U-chruthach, fráma ar chruth UFor usage examples see A
for