Late Middle English (in an earlier sense). From classical Latin nebulōsus foggy, vaporous, obscure, in post-classical Latin also ‘wavy’ from nebula + -ōsus.
Definition of nebulose in US English:
nebulose
adjective
rare
Cloudlike, resembling a cloud or clouds.
Origin
Late Middle English (in an earlier sense). From classical Latin nebulōsus foggy, vaporous, obscure, in post-classical Latin also ‘wavy’ from nebula + -ōsus.