(n) offshore center
offshore centre
(n) offshore fund
(n) off Broadway
(n) (comp) offline storage
(n) (comp) object class
(n) (comp) object code
(n) (comp) object identifier
(n) obstruction
(n) optional tour
(n) optional parts
(n) (comp) option switch
(adj-na) optimistic
(n) optical art
(n) (comp) optical mouse
(n) (comp) OptiPlex
(n) operant conditioning
(n) operant conditioning
(n) (comp) Oracle 8i
(n) (comp) Oracle 9i
(n) sauce Hollandaise
(n) orientation
(P)
(n) orienteering
(P)
(n) oligonucleotide
(n) original calorie
(n) original scenario
(n) original print
(n) (comp) originate mode
(n) olistostrome
(n) Olympic Park
(adj-no) orthochromatic