de·duce 
/dɪˈdu:s, Brit dɪˈdju:s/ verb
de·duc·es; de·duced; de·duc·ing /dɪˈdu:s, Brit dɪˈdju:s/ verb [+ obj] formal : to use logic or reason to form (a conclusion or opinion about something) : to decide (something) after thinking about the known facts
▪ Scientists use several methods to deduce [=determine] the age of ancient objects. ▪ They deduced [=concluded] that he was present at the scene of the crime. — often + from ▪ A word's meaning can often be deduced from its context.
▪ Scientists use several methods to deduce [=determine] the age of ancient objects. ▪ They deduced [=concluded] that he was present at the scene of the crime. — often + from ▪ A word's meaning can often be deduced from its context.
