What is "tissandier"

Tissandier is a surname, and may refer to:

• Gaston Tissandier (1843–1899), French chemist, meteorologist, aviator and editor
• Albert Tissandier (1839–1906), Gaston's brother, French architect, aviator, illustrator, editor and archaeologist
• Paul Tissandier (1881–1945), Gaston's son, French aviator
• The Paul Tissandier Diploma - awarded in honour of Paul Tissandier.