aestivo-autumnal
/ˌiːstɪvəʊɔːˈtʌmn(ə)l/ /iːˌstʌɪvəʊɔːˈtʌmn(ə)l/ /ˌɛstɪvəʊɔːˈtʌmn(ə)l/(also estivo-autumnal) Medicine. Now chiefly historical
adjective
Designating falciparum malaria, which occurs most commonly in late summer and autumn in temperate regions.
Origin
Late 19th century. From aestive + -o- + autumnal, after Italian estivo-autunnale.