D defs.my
Entry 3 senses Webster, 1913

Assembler

/əs-ĕm'-blẽr/ · As·sem·bler · IPA /əˈsɛmb(ə)lɚ/
01 n. One who assembles a number of individuals; also, one of a number assembled.
  1. 1.
    One who assembles a number of individuals; also, one of a number assembled.
  2. 2.
    a computer program that takes as input a set of instructions written in assembly language, and produces a corresponding executable computer program in machine language.(Computers)
  3. 3.
    same as assembly language.(Computers) [informal] See: assembly language