Definition of Rigid

Adjective: rigid ri-jid

Incapable of or resistant to bending
"a rigid strip of metal"; "a table made of rigid plastic";
- stiff
Incapable of compromise or flexibility
- strict
Incapable of adapting or changing to meet circumstances
"a rigid disciplinarian";
- inflexible, unbending
(aeronautics) designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure
Unchanging and unmoving
"a face rigid with pain";
- fixed, set