1. A protective mask with a filter; protects the face and lungs against poisonous gases
   - gasmask, respirator

Derived forms: gas helmets

Type of: mask

• transplantation
• transplanter
• transplanting
• transpolar
• transponder
• transport
• transport ship
• transportable
• transportation
• transportation company
• Transportation Secretary
• Transportation Security Administration
• transportation system
• transporter
• transposability
• transposable
• transpose
• transposed
• transposition
• transposon
• transputer
• transsexual
• transsexual surgery
• transsexualism
• transship