Sign Language

**Definition:** A system of hand gestures used for communication by those with HEARING LOSS or by people speaking different languages.

**Tree numbers:** - E02.760.169.063.500.200.609.668 - E02.831.200.609.668 - F01.145.209.399.500 - F01.145.209.530.702.668 - L01.143.649.526.668