rig·our 
(rĭgər)
(rĭgər)n.
Chiefly British
Chiefly British
Variant of rigor.
- bioleached
- bioleaching
- biolith
- biolithic
- biologic
- biologic
- biological
- biological clock
- biological computing
- biological control
- biological drug
- biological half-life
- biologically
- biological oxygen demand
- biological response modifier
- biological warfare
- biological weapon
- biologist
- biology
- bioluminescence
- bioluminescent
- biolysis
- biolytic
- biomagnetism
- biomagnification