of great force or power
"The titanic effort required to save the sinking ship amazed everyone on board."
Having great size, or great strength, force or power.
"The titanics were said to have been imprisoned beneath Mount Olympus after their rebellion against the gods."
Of or relating to titanium, especially tetravalent titanium
Of, or relating to the Titans, a race in ancient mythology.
In plain English: Titanic describes something that is extremely large and powerful, often so big it seems impossible to move or stop.
"The company faced titanic challenges during its first year in business."
Usage: Use titanic only when describing something of immense scale or overwhelming power, such as a titanic effort or storm. Do not use it interchangeably with the adjective "huge" if you simply mean large in physical dimensions without implying massive force.
RMS Titanic, a cruise liner that sank on its maiden voyage on April 15, 1912 after colliding with an iceberg.
"The tragic story of the Titanic remains etched in history as the greatest maritime disaster of the twentieth century."
The word "titanic" comes from combining the element name "titanium" with a suffix that means "of or pertaining to." This specific usage was modeled after the French adjective titanique.