"complementary allophone" meaning in English

{
  "forms": [
    {
      "form": "complementary allophones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "complementary allophone (plural complementary allophones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Phonology",
          "orig": "en:Phonology",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2017, Robert Kennedy, Phonology: A Coursebook, Cambridge University Press, →ISBN, page 102:",
          "text": "... complementary allophone from the underlying phoneme. In each pair, the unaspirated form has a more general distribution. The aspirated allophone occurs in a very specific set of circumstances: in initial position of a word or stressed[…]",
          "type": "quote"
        },
        {
          "ref": "2012, Irén Heged?s, Alexandra Fodor, English Historical Linguistics 2010: Selected Papers from the Sixteenth International Conference on English Historical Linguistics (ICEHL 16), Pécs, 23-27 August 2010, John Benjamins Publishing, →ISBN, page 47:",
          "text": "... complementary allophone of /i/, its occurrence being largely restricted to positions before /r, h, hw/. Similarly, the emergence of short 〈aú〉 /ɔ/ was primarily associated with PGmc. /u/ preceding the same three consonants. In Early[…]",
          "type": "quote"
        }
      ],
      "glosses": [
        "A variant pronunciations of a phoneme that occur in specific phonetic contexts and do not change the meaning of a word"
      ],
      "id": "en-complementary_allophone-en-noun-x~UXqHoG",
      "links": [
        [
          "phonology",
          "phonology"
        ],
        [
          "variant",
          "variant"
        ],
        [
          "pronunciations",
          "pronunciations"
        ],
        [
          "phoneme",
          "phoneme"
        ],
        [
          "specific",
          "specific"
        ],
        [
          "phonetic",
          "phonetic"
        ],
        [
          "context",
          "context"
        ],
        [
          "change",
          "change"
        ],
        [
          "word",
          "word"
        ]
      ],
      "raw_glosses": [
        "(phonology) A variant pronunciations of a phoneme that occur in specific phonetic contexts and do not change the meaning of a word"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonology",
        "sciences"
      ]
    }
  ],
  "word": "complementary allophone"
}

{
  "forms": [
    {
      "form": "complementary allophones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "complementary allophone (plural complementary allophones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Phonology"
      ],
      "examples": [
        {
          "ref": "2017, Robert Kennedy, Phonology: A Coursebook, Cambridge University Press, →ISBN, page 102:",
          "text": "... complementary allophone from the underlying phoneme. In each pair, the unaspirated form has a more general distribution. The aspirated allophone occurs in a very specific set of circumstances: in initial position of a word or stressed[…]",
          "type": "quote"
        },
        {
          "ref": "2012, Irén Heged?s, Alexandra Fodor, English Historical Linguistics 2010: Selected Papers from the Sixteenth International Conference on English Historical Linguistics (ICEHL 16), Pécs, 23-27 August 2010, John Benjamins Publishing, →ISBN, page 47:",
          "text": "... complementary allophone of /i/, its occurrence being largely restricted to positions before /r, h, hw/. Similarly, the emergence of short 〈aú〉 /ɔ/ was primarily associated with PGmc. /u/ preceding the same three consonants. In Early[…]",
          "type": "quote"
        }
      ],
      "glosses": [
        "A variant pronunciations of a phoneme that occur in specific phonetic contexts and do not change the meaning of a word"
      ],
      "links": [
        [
          "phonology",
          "phonology"
        ],
        [
          "variant",
          "variant"
        ],
        [
          "pronunciations",
          "pronunciations"
        ],
        [
          "phoneme",
          "phoneme"
        ],
        [
          "specific",
          "specific"
        ],
        [
          "phonetic",
          "phonetic"
        ],
        [
          "context",
          "context"
        ],
        [
          "change",
          "change"
        ],
        [
          "word",
          "word"
        ]
      ],
      "raw_glosses": [
        "(phonology) A variant pronunciations of a phoneme that occur in specific phonetic contexts and do not change the meaning of a word"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonology",
        "sciences"
      ]
    }
  ],
  "word": "complementary allophone"
}