1. The blood group whose red cells carry neither the A nor B antigens
   - O, type O

Type of: blood group, blood type

• standard of life
• standard of living
• standard of measurement
• standard operating procedure
• standard poodle
• standard pressure
• standard procedure
• standard schnauzer
• standard temperature
• standard time
• standard transmission
• standard-bearer
• standardisation
• standardise
• standardised
• standardiser
• standardization
• standardize
• standardized
• standardizer
• standby
• standdown
• standee
• stander
• standing