mammoth

As adjectives the difference between mammoth and mastodontic

is that mammoth is comparable to a mammoth in its size; very large, huge, gigantic while mastodontic is of, or pertaining to, the mastodont.

As a noun mammoth

is any species of the extinct genus Mammuthus, of large, usually hairy, elephant-like mammals with long curved tusks and an inclined back, which became extinct with the last retreat of ice age glaciers during the late Pleistocene period, and are known from fossils, frozen carcasses, and Paleolithic cave paintings found in North America and Eurasia.

Mammoth is a synonym of mastodonic.

As adjectives the difference between mammoth and mastodonic

is that mammoth is comparable to a mammoth in its size; very large, huge, gigantic while mastodonic is of, or pertaining to, the mastodon.

As a noun mammoth

is any species of the extinct genus mammuthus , of large, usually hairy, elephant-like mammals with long curved tusks and an inclined back, which became extinct with the last retreat of ice age glaciers during the late pleistocene period, and are known from fossils, frozen carcasses, and paleolithic cave paintings found in north america and eurasia.