
–noun
a formal discourse or treatise in which a subject is examined and discussed; dissertation. |
[Origin: 1595–1605; <>disquīsītiōn- (s. of disquīsītiō), equiv. to disquīsīt(us) (ptp. of disquīrere to investigate; dis- dis-1 + quaerere to seek, ask) + -iōn- -ion
]
from dictionary.com

from dictionary.com