---
title: baseExpression
framework: Accessibility
role: symbol
role_heading: Instance Property
platforms: [iOS 18.2+, iPadOS 18.2+, Mac Catalyst 18.2+, macOS 15.2+, tvOS 18.2+, visionOS 2.2+, watchOS 11.2+]
path: accessibility/axmathexpressionunderover/baseexpression
---

# baseExpression

## Declaration

```swift
var baseExpression: AXMathExpression { get }
```