1. Having no parts resembling rays; not having ray flowers

See also: ray

• opportunism
• opportunist
• opportunistic
• opportunistic infection
• opportunistically
• opportunity
• opportunity cost
• opposable
• oppose
• opposed
• opposer
• opposing
• opposite
• opposite number
• opposite word
• oppositely
• oppositeness
• opposition
• oppositionist
• oppositive
• oppress
• oppressed
• oppression
• oppressive
• oppressively