ooid UK /ˈəʊˌɔɪd/US /ˈoʊˌɔɪd/adjective 1noun 1forms 6 adjective1 •Shaped like an egg; ovoid; ovate. noun1 •A small calcium carbonate- or iron-coated grain found on the seafloor. formsooids · oöids · more ooid · more oöid · most ooid · most oöid
