Adverb
By deduction; by way of inference; by consequence.
Source: Webster's dictionaryThe psycho-physiological hypothesis is both inductively and deductively the sine qua non of the science of psychology. Boris Sidis
Diamond argued that: “The human mind, Hayek says, is not just limited in its ability to synthesize a vast array of concrete facts, it is also limited in its ability to give a deductively sound ground to ethics. Source: Internet
Such spreadsheets can be used to reason deductively about their cell values. Source: Internet