"β' συνθ." meaning in Greek

{
  "forms": [
    {
      "form": "v' synth.",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "noun",
        "g": "n"
      },
      "expansion": "β' συνθ. • (v' synth.) n",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "(v' synthetikó): 2nd combining form",
          "word": "β' συνθετικό"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Greek 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": "el",
          "name": "Linguistics",
          "orig": "el:Linguistics",
          "parents": [
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of β' συνθετικό (v' synthetikó): 2nd combining form"
      ],
      "id": "en-β'_συνθ.-el-noun-IhiFUTMi",
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "β' συνθετικό",
          "β' συνθετικό#Greek"
        ],
        [
          "2nd",
          "2nd"
        ],
        [
          "combining form",
          "combining form"
        ]
      ],
      "raw_glosses": [
        "(linguistics) Abbreviation of β' συνθετικό (v' synthetikó): 2nd combining form"
      ],
      "related": [
        {
          "english": "1st combining form",
          "roman": "a' synth.",
          "tags": [
            "neuter"
          ],
          "word": "α' συνθ."
        }
      ],
      "synonyms": [
        {
          "roman": "déftero synthetikó",
          "tags": [
            "neuter"
          ],
          "word": "δεύτερο συνθετικό"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "word": "β' συνθ."
}

{
  "forms": [
    {
      "form": "v' synth.",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "noun",
        "g": "n"
      },
      "expansion": "β' συνθ. • (v' synth.) n",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "noun",
  "related": [
    {
      "english": "1st combining form",
      "roman": "a' synth.",
      "tags": [
        "neuter"
      ],
      "word": "α' συνθ."
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "extra": "(v' synthetikó): 2nd combining form",
          "word": "β' συνθετικό"
        }
      ],
      "categories": [
        "Greek abbreviations",
        "Greek dictionary abbreviations",
        "Greek entries with incorrect language header",
        "Greek lemmas",
        "Greek multiword terms",
        "Greek neuter nouns",
        "Greek nouns",
        "Greek terms spelled with .",
        "Pages with 1 entry",
        "Pages with entries",
        "el:Linguistics"
      ],
      "glosses": [
        "Abbreviation of β' συνθετικό (v' synthetikó): 2nd combining form"
      ],
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "β' συνθετικό",
          "β' συνθετικό#Greek"
        ],
        [
          "2nd",
          "2nd"
        ],
        [
          "combining form",
          "combining form"
        ]
      ],
      "raw_glosses": [
        "(linguistics) Abbreviation of β' συνθετικό (v' synthetikó): 2nd combining form"
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "roman": "déftero synthetikó",
      "tags": [
        "neuter"
      ],
      "word": "δεύτερο συνθετικό"
    }
  ],
  "word": "β' συνθ."
}