> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ExternalDictionaryDescription Object (IExternalDictionaryDescription Interface)

This object provides access to an [external dictionary](/fine-reader/engine/guided-tour/advanced-techniques/working-with-dictionaries#external). The IExternalDictionaryDescription interface is a child object of the [IDictionaryDescription](/fine-reader/engine/api-reference/language-related-objects/dictionarydescription) interface and inherits all its properties. The external dictionary is represented as the [IExternalDictionary](/fine-reader/engine/api-reference/language-related-objects/iexternaldictionary-interface) interface which is implemented on the client-side. This interface allows you to implement your own type of dictionary. You can attach a dictionary with the help of the [SetDictionary](/fine-reader/engine/api-reference/language-related-objects/externaldictionarydescription/setdictionary-method) method of the ExternalDictionaryDescription object.

## Properties

| Name             | Type                                                                                                             | Description                                                                                                                                                                                                                                                                                                                                                                                                          |
| ---------------- | ---------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| CheckPrefixes    | [VARIANT\_BOOL](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties) | If this property is FALSE, the external dictionary will not be used for prefixes checking, and the [CheckPrefix](/fine-reader/engine/api-reference/language-related-objects/iexternaldictionary-interface/checkprefix-method) method of the [IExternalDictionary](/fine-reader/engine/api-reference/language-related-objects/iexternaldictionary-interface) interface will not be called. The default value is TRUE. |
| FullFuzzySupport | [VARIANT\_BOOL](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties) | If this property is FALSE, the [fuzzy string](/fine-reader/engine/api-reference/language-related-objects/fuzzystring#fuzzystring) will contain only capital letters as the recognition variant. The default value is TRUE.                                                                                                                                                                                           |

## Methods

| Name                                                                                                                           | Description                      |
| ------------------------------------------------------------------------------------------------------------------------------ | -------------------------------- |
| [SetDictionary](/fine-reader/engine/api-reference/language-related-objects/externaldictionarydescription/setdictionary-method) | Attaches an external dictionary. |

## Related objects

<img src="https://mintcdn.com/abbyy/lsETHFYUFiongXSm/images/fine-reader/engine/externaldictionarydescription.gif?s=cf83fdd7270a61d52e3de8e700bc326b" alt="ExternalDictionaryDescription" width="352" height="230" data-path="images/fine-reader/engine/externaldictionarydescription.gif" />[](/fine-reader/engine/api-reference/language-related-objects/textlanguage#prohibitingdictionaries)[](/fine-reader/engine/api-reference/language-related-objects/baselanguage#dictionarydescriptions)[](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/element-property)[](/fine-reader/engine/api-reference/language-related-objects/fuzzystring)[](/fine-reader/engine/api-reference/language-related-objects/fuzzystrings)[](/fine-reader/engine/api-reference/language-related-objects/externaldictionarycallback)[](/fine-reader/engine/api-reference/language-related-objects/externaldictionarydescription/setdictionary-method)[](/fine-reader/engine/api-reference/language-related-objects/iexternaldictionary-interface)[](/fine-reader/engine/api-reference/language-related-objects/dictionarydescription)[](/fine-reader/engine/api-reference/language-related-objects/dictionarydescriptions)[](/fine-reader/engine/api-reference/language-related-objects/baselanguage)[](/fine-reader/engine/api-reference/language-related-objects/textlanguage)

[Object Diagram](/fine-reader/engine/api-reference/object-diagram)

## Output parameter

This object is the output parameter of the [Item](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/item-method), [AddNew](/fine-reader/engine/api-reference/language-related-objects/dictionarydescriptions/addnew-method) methods of the [DictionaryDescriptions](/fine-reader/engine/api-reference/language-related-objects/dictionarydescriptions) object.

## See also

[Working with Dictionaries](/fine-reader/engine/guided-tour/advanced-techniques/working-with-dictionaries)

[DictionaryDescription](/fine-reader/engine/api-reference/language-related-objects/dictionarydescription)

[DictionaryDescriptions](/fine-reader/engine/api-reference/language-related-objects/dictionarydescriptions)

[Working with Properties](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)