Definition of invulnerable adjective from the Oxford Advanced American Dictionary

 

invulnerable

 adjective
adjective
NAmE//ɪnˈvʌlnərəbl//
 
 
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that cannot be harmed or defeated; safe to be in an invulnerable position Parents may seem invulnerable to their children. invulnerable to something The submarine is invulnerable to attack while at sea. opposite vulnerable
invulnerability
 
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NAmE//ɪnˌvʌlnərəˈbɪlət̮i//
 
noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: invulnerable