Megalithic (adjective)

1. Relating to or characterized by the use of megaliths in construction, typically prehistoric stone structures or tombs.
2. Very large and imposing, especially in size or scale.

Origin:

The word megalithic is derived from the noun megalith, which comes from the greek μέγας (megas), meaning 'large', and λίθος (lithos), meaning 'stone'. the adjective form was first used in the 19th century to describe large stone structures built by ancient civilizations.

Examples:

1. The megalithic temple was built with massive stone blocks that weighed several tons each.
2. The megalithic structures of the ancient city are among the largest and most impressive of their kind.
3. The megalithic monuments of Easter Island are thought to have been built by the Rapa Nui people.
4. The megalithic tombs of the Neolithic period are some of the earliest examples of monumental architecture.
5. The megalithic ruins of the ancient city are a testament to the impressive technological capabilities of its people.