operator

operator is defined in Webster's Unabridged Dictionary (1913) with 3 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(Surg.) One who performs some act upon the human body by means of the hand, or with instruments.
  2. 2.A dealer in stocks or any commodity for speculative purposes; a speculator. [Brokers' Cant]
  3. 3.(Math.) The symbol that expresses the operation to be performed; -- called also facient.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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