English edit

Etymology edit

Megatherium +‎ -oid

Noun edit

megatheroid (plural megatheroids)

  1. (paleontology) One of a family of extinct edentates found in America, including the megatherium and the megalonyx, among others.
    • 1851 June 11, The Geelong Advertiser, Victoria, page 1, column 2:
      The more striking phenomena first and most strongly impress the mind, which contrasts for example, the great Cave-Bears of Europe with the actual Brown Bear, the Megatheroids of South America with the small existing sloths, and the gigantic Glyptodons with the Armadillos.