abactinal /ab-ak-tīˈnəl or ab-akˈti-nəl/ (zoology)

1. Remote from the actinal area
2. Without rays

• understood
• understorey
• understoreys
• understories
• understory
• understrapper
• understrappers
• understrapping
• understrata
• understratum
• understudied
• understudies
• understudy
• understudying
• undersubscribed
• undersupplies
• undersupply
• undersurface
• undersurfaces
• under suspicion
• underta'en
• undertakable
• undertake
• undertaken
• undertaker