spənˈjilə, spän- noun
Usage: capitalized
Etymology: New Latin, from Latin spongia sponge + New Latin -illa
: a genus (the type of the family Spongillidae) of siliceous freshwater sponges that are usually green in color and form incrustations on submerged objects
• spon·gil·lid -lə̇d noun -s
• spon·gil·line -iˌlīn, -ilə̇n adjective