ADJECTIVE (3)

1. able to exist and perform in harmonious or agreeable combination;
- Example: "a compatible married couple"
- Example: "her deeds were compatible with her ideology"

2. capable of being used with or connected to other devices or components without modification;

3. capable of forming a homogeneous mixture that neither separates nor is altered by chemical interaction;

The Collaborative International Dictionary of English v.0.48:

Compatible \Com*pat"i*ble\, a. [F., fr. LL.compatibilis, fr. L.
   compati. See Compassion.]
   Capable of existing in harmony; congruous; suitable; not
   repugnant; -- usually followed by with.
   [1913 Webster]

         Our poets have joined together such qualities as are by
         nature the most compatible.              --Broome.

   Syn: Consistent; suitable; agreeable; accordant.
        [1913 Webster]

WordNet (r) 3.0 (2006):

compatible
    adj 1: able to exist and perform in harmonious or agreeable
           combination; "a compatible married couple"; "her deeds
           were compatible with her ideology" [ant: incompatible]
    2: capable of being used with or connected to other devices or
       components without modification [ant: incompatible]
    3: capable of forming a homogeneous mixture that neither
       separates nor is altered by chemical interaction

Moby Thesaurus II by Grady Ward, 1.0:

123 Moby Thesaurus words for "compatible":
   accordant, affable, affirmative, agreeable, agreeing, akin,
   amiable, amicable, answerable, appropriate, at one, attuned,
   blissful, cheerful, civil, clubbable, clubbish, clubby, coexistent,
   coexisting, coherent, coincident, coinciding, commensurate,
   communicative, companionable, companionate, complaisant,
   concordant, concurring, conformable, congenial, congruent,
   congruous, consentaneous, consentient, consistent, consonant,
   cooperating, cooperative, cordial, correspondent, corresponding,
   courteous, desirable, dulcet, empathetic, empathic, en rapport,
   enjoyable, equivalent, fair, fair and pleasant, felicific,
   felicitous, fine, fit, fit for society, fitting, fond of society,
   frictionless, friendly, genial, good, goodly, gracious, grateful,
   gratifying, gregarious, harmonious, heart-warming, honeyed,
   hospitable, in accord, in agreement, in concert, in rapport,
   in sync, in synchronization, in tune, inaccordance, inharmony,
   likable, like-minded, meet, mellifluous, mellow, nice, of a piece,
   of like mind, of one mind, on all fours, peaceful, pleasant,
   pleasing, pleasurable, pleasure-giving, pleasureful, positive,
   proper, proportionate, reconcilable, rewarding, satisfying,
   self-consistent, sociable, social, social-minded, suitable, sweet,
   symbiotic, sympathetic, synchronized, synchronous, together,
   unanimous, understanding, uniform, unisonant, unisonous, united,
   urbane, welcome



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

compatible
compatibility

    Different systems (e.g., programs, file formats,
   protocols, even programming languages) that can work
   together or exchange data are said to be compatible.

   See also backward compatible, forward compatible.

   (1998-01-15)