Yes, JSON Schema allows referencing snippets from other schemas using the "$ref" keyword. For example:
```json
{
"$ref": "#/definitions/person"
}
```
```json
{
"definitions": {
"person": {
"type": "object",
"properties": {
"name": { "type": "string" }
}
}
}
}
```
Here the "person" definition is referenced from the main schema using "$ref".