Толковый словарь английского языка - infix

I. transitive verb see: fix Date: 1502 to fasten or fix by piercing or thrusting in, to impress firmly in the consciousness or disposition, to insert (as a sound or letter) as an ~, see: implant ~ation noun II. noun Date: 1881 a derivational or inflectional affix appearing in the body of a word (as Sanskrit -n- in vindami “I know” as contrasted with vid “to know”), III. adjective Date: 1971 characterized by placement of a binary operator between the operands