reduct1
/rɪˈdʌkt/noun
1A mathematical or logical structure derived from a given structure by disregarding some of the operations and relations of the latter.
2 Fortification. = redoubt 1b. Now rare.
Origin
Late 16th century (in an earlier sense). Partly from classical Latin reductus, past participle of reducere reduce, and partly from post-classical Latin reductus refuge, hiding place, retreat.
reduct2
/rɪˈdʌkt/Now rare
verb
1 [with object] To deduct (a sum or amount). Also without object. Chiefly US regional in later use.
2 [with object] To bring down or diminish in size, number, amount, or degree.
Origin
Mid 16th century (in an earlier sense). From classical Latin redūct-, past participial stem of redūcere reduce; compare earlier reduct and also later reduct. In later use perhaps an alteration of reduce resulting from association with reduction and deduct, or in some instances perhaps simply an error for reduce.