The Collaborative International Dictionary of English v.0.48:

Chemist \Chem"ist\, n. [Shortened from alchemist; cf. F.
   chimiste.]
   A person versed in chemistry or given to chemical
   investigation; an analyst; a maker or seller of chemicals or
   drugs.
   [1913 Webster]

WordNet (r) 3.0 (2006):

chemist
    n 1: a scientist who specializes in chemistry
    2: a health professional trained in the art of preparing and
       dispensing drugs [syn: pharmacist, druggist, chemist,
       apothecary, pill pusher, pill roller]

The Free On-line Dictionary of Computing (19 January 2023):

chemist

    (Cambridge) Someone who wastes computer time on
   number crunching when you'd far rather the computer were
   working out anagrams of your name or printing Snoopy calendars
   or running life patterns.  May or may not refer to someone
   who actually studies chemistry.

   [Jargon File]

   (1995-02-07)


The Jargon File (version 4.4.7, 29 Dec 2003):

chemist
 n.

    [Cambridge] Someone who wastes computer time on number-crunching when
    you'd far rather the machine were doing something more productive, such as
    working out anagrams of your name or printing Snoopy calendars or running 
    life patterns. May or may not refer to someone who actually studies
    chemistry.