atollnoun [ C ]
uk/ˈæt.ɒl/us/ˈæt.ɑːl/a ring-shaped island formed of coral (= rock-like natural substance) that surrounds a lagoon (= area of sea water):
the Bikini Atoll
Thesaurus: synonyms and related words
Geography: small & large land masses
- archipelago
- continent
- coral reef
- desert island
- island
- isle
- landform
- landlocked
- landmass
- Pangaea
- subcontinent
- the mainland