[adjective] [U; not gradable] [specialized] - (of a noun) naming something that you can have more or less of but that you cannot count or have many ofWords like 'electricity', 'blood' and 'happiness' are uncountable - you cannot say 'two electricities', 'a lot of bloods' or 'many happinesses' - and they are marked in this dictionary.Compare countable at count (NUMBER).
UNCOUNTABLE
Meaning of UNCOUNTABLE in English
Cambridge English vocab. Кембриджский английский словарь. 2012