All 4 Uses

deduce
in
Book Scavenger
(Edited)

When she deduced San Francisco was their next move, Emily should have flung the gold coins in celebration.
p. 12.1 *

deduced = determined by reasoning
Not that pinpointing another Book Scavenger user was an easy thing to deduce, even in the smallest and quietest of schools.
p. 113.9

deduce = determine by reasoning
I deduced his connection to Rufus Griswold within my first year of working for him.
p. 316.3

deduced = determined by reasoning
I had fun peppering these in, and you might enjoy spotting them and deducing their significance.
p. 350.9

deducing = determining by reasoning

Definitions:

(1) (deduce)
conclude by reasoning -- especially reasoning from the general to the particular
(2) (meaning too rare to warrant focus)