The definition of titanic is huge or of great strength like the Titans, or containing titanium.(adjective)
The Titanic was a British ocean liner that sank in 1912 on its maiden voyage.(noun)
An example of the Titanic is the liner that hit an iceberg causing a huge loss of life.
See titanic in Webster's New World College Dictionary
Origin: Gr Titanikos
See titanic in American Heritage Dictionary 4
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