Browse the Oxford Advanced American Dictionary
- OS
abbreviation - Oscar™
noun - oscillate
verb - oscillation
noun - oscillator
noun - oscilloscope
noun - OSHA
abbreviation - osier
noun - osmium
noun - osmosis
noun - osprey
noun - osseous
adjective - ossify
verb - ostensible
adjective - ostentation
noun - ostentatious
adjective - osteo-
combining form - osteoarthritis
noun - osteopath
noun - osteopathy
noun - osteoporosis
noun - ostracism
noun - ostracize
verb - ostrich
noun - OT
abbreviation - OTC
abbreviation - other
adjective - other woman
noun - other-worldly
adjective - otherness
noun - otherwise
adverb - otiose
adjective - otitis
noun - otolaryngology
noun - Ottawa
- otter
noun - otto
noun - ottoman
noun - ouch
exclamation - ought to
modal verb - Ouija board™
noun - ounce
noun - our
determiner - ours
pronoun - ourselves
pronoun - -ous
suffix - oust
verb - ouster
noun - out
adjective - out
adverb
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