am‧phib‧i‧ous /æmˈfɪbiəs/ adjective
[Date: 1600-1700; Language: Greek; Origin: amphibios 'living a double life', from amphi- 'round, on both sides, both' + bios 'way of life']

1. able to live both on land and in water:
amphibious creatures

2. amphibious vehicle a vehicle that is able to move both on land and in water

3. amphibious operation/force/assault an amphibious operation etc involves both sea and land vehicles

[TahlilGaran] Dictionary of Contemporary English ▲