microthermal
adjective/ˌmaɪkrəʊˈθɜːməl/
/ˌmaɪkrəʊˈθɜːrməl/
[only before noun]- (of climate) having cold winters and short summers compare megathermal, mesothermalWord Originearly 20th cent. (in an earlier sense): from micro- + thermal.
Check pronunciation:
microthermal