The Collaborative International Dictionary of English v.0.48:

Ld \Ld.\ n.
   The abbreviation for limited, term appended to the name of
   a company that is organized to give its owners limited
   liability; also abbreviated Ltd. It corresponds to Inc.
   in the United States. [Chiefly British] [abbr.]

   Syn: limited company, Ltd.
        [WordNet 1.5]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

LD
       LAN Destination (ATM)


The Free On-line Dictionary of Computing (30 December 2018):

ld

   1.  (Load) Unix's linker.

   2.  logarithmus dualis.

   (1999-03-19)