nav ‧ i ‧ ga ‧ ble /ˈnævəɡəb ə l, ˈnævɪɡəb ə l/ BrE AmE adjective
a river, lake etc that is navigable is deep and wide enough for ships to travel on
—navigability /ˌnævəɡəˈbɪləti, ˌnævɪɡəˈbɪləti/ noun [uncountable]
nav ‧ i ‧ ga ‧ ble /ˈnævəɡəb ə l, ˈnævɪɡəb ə l/ BrE AmE adjective
a river, lake etc that is navigable is deep and wide enough for ships to travel on
—navigability /ˌnævəɡəˈbɪləti, ˌnævɪɡəˈbɪləti/ noun [uncountable]
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012