narceine or narceen /närˈsēn/

A narcotic alkaloid in opium, C₂₃H₂₇O₈N

• ultrabasic
• ultracentrifugal
• ultracentrifugation
• ultracentrifuge
• ultracentrifuged
• ultracentrifuges
• ultracentrifuging
• ultracrepidarian
• ultracrepidate
• ultracrepidated
• ultracrepidates
• ultracrepidating
• ultra-distance
• ultrafiche
• ultrafiches
• ultrafilter
• ultrafiltered
• ultrafiltering
• ultrafilters
• ultrafiltrate
• ultrafiltrates
• ultrafiltration
• ultra-heat-treated
• ultra-high
• ultra-high frequency